How much should premature babies gain in weight. How fast do premature babies gain weight? How does he develop physically?

Babies less than 45 cm tall and weighing less than 2500 g, born before 37 weeks of gestation, are considered premature. Their respiratory, cardiovascular and thermoregulatory systems are still immature, so these babies require medical supervision and special care. And first of all, mothers think about how to gain weight for a premature baby.

How premature babies gain weight

Since premature babies are small, the main indicator of their development and health is weight gain. As a rule, premature babies increase their weight faster than full-term babies.

How to gain weight for a premature baby? He needs to provide good nutrition - and best of all, if it is breast milk.

This factor is also affected by the degree of prematurity:

• 1 - children are born at 35-37 weeks weighing from 2000 to 2500g;
• 2 - children are born at 32-35 weeks weighing from 1500 to 2000g;
• 3 - children are born at 29-31 weeks weighing from 1000 to 1500g;
• 4 - babies are born before 29 weeks weighing less than 1000g.

For example, a full-term baby doubles its body weight by 4-5 months, and a premature baby, weighing from 2000 to 2500g at birth, by 3-3.5 months.

In the first month of life, babies with 1 degree of prematurity gain 300 g in weight, with 2 and 3 degrees - 190 g, and babies with 4 degrees of prematurity - 180 g. In the second month, babies from group 1 add 800g, children from group 2 - 700g, from group 3 - 650g, from group 4 - 400g. Starting from the third month of life, premature babies begin to gain weight from 650 to 800 g.

But these are only approximate figures, weight gain is also affected by:

• the quality and usefulness of nutrition;
• frequency and duration of feedings;
• family situation;
• hereditary factor;
• mom's food.

Determine if gaining weight is good or bad premature baby only an expert can. But if it seems to the mother that the baby is not eating well, she observes the baby’s frequent whims, then an urgent need to contact a pediatrician.

How can a premature baby gain weight quickly?

The task of the mother is to provide a full-fledged nutrition to a premature baby, including a sufficient amount of calories and essential nutrients. After all, it is important for such a baby to develop intensively in order to catch up with their peers. For this you need:

1. Feed your baby as much as possible breast milk, in which there are a lot of amino acids, protein, oligosaccharides, antibodies. Unlike the breast milk of a woman who gave birth at term, milk for a premature baby contains less lactose.
2. When feeding a baby through a tube, in the case of a poorly formed sucking reflex, it is important for a woman to provide the baby with breast milk, constantly expressing it. To do this, you need to purchase a breast pump, since it is very difficult to manually express milk in the amount necessary for the baby.
3. Apply to the breast at the request of the child. It is important to apply it correctly.
4. Be sure to feed your baby at night.
5. Ensure constant physical contact between the baby and mother.

When a child is just born, the obstetrician immediately measures his height and weight.

How important are these indicators, what are they in the norm and how to make sure that your baby weighs no more and no less than healthy children of his age?

How much should he grow in the first year of life and is it worth panicking if the parameters do not match the tabular data?

What about premature babies? We will consider these questions in the article, and also find out the opinion of Dr. Komarovsky on the problem of slow weight gain.

Birth weight - what is the norm for infants?

Averages normal weight newborn: from 2 kg 800 g to 3 kg 900 g. WHO proposes the following weight classification with growth from 45 to 55 cm.

Weight	For girls, value in grams	For boys, value in grams
very low	2000	2100
short	2400	2500
below the average	2800	2900
average	3200	3300
above average	3700	3900
high	4200	4400
very tall	4800	5000

Reference! The normal weight according to this table is an indicator that is in the range from "below average" to "above average".

If the weight of the child differs from these indicators, it should be taken into account at what time the birth occurred (in medical terminology, the gestational age). Weight gain rates are much lower and are described in the last paragraph of the article.

Average indicators for infants in the first year of life on breastfeeding

During the first week after birth, the weight of the baby usually decreases. Reasons for this phenomenon:

• in the first 3-5 days, the mammary glands of the mother produce colostrum in small quantities, which do not have a high calorie content, so the child's body is saturated, but does not store reserves and does not grow;
• the body loses excess fluid;
• passes the original feces.

Important! Weight loss rates in the first week are from 6 to 10%. If a child was born with a weight of 3500 g, after a week this figure may be 3150 g.

By the time of discharge from the hospital, the baby should begin to gain weight.

Over the next 12 months, the increase per month can range from 100 to 1500 g.

The increase is uneven: in the first few months there may be a jump of one and a half kilograms per month, which then decreases to an increase of 100-300 grams by the end of the first year of life.

• In the first, the weight increases monthly by 750 g.
• From 3 to 6 months - for 700 g.
• From 7 to 9 months - for 550 g.
• From 9 to 12 months - for 350 g.

During the first lives, the baby, on average, gains its weight at birth.

How to calculate how much the baby should add?

• After discharge from the hospital and the start of weight gain, the baby should recover to birth weight within 7-10 days (gain the lost 10%, which is 280-390 g).
• Over the next 6 months, the weight of the baby, on average, increases by the rate with which he was born. By the time when it will be possible to celebrate six months from the birthday, "Double" generic weight will be 5600 - 7800 g., i.e. an average of 700-750 per month.
• From six months to the first birthday, babies slow down their growth rate and weight should increase by 350-550 g. Monthly and approximately reach triple birth weight.

Important! There is no universal method for calculating weight gain for infants, but if the baby’s growth does not stop, there are no complaints about appetite and well-being, you can simply check the table of monthly gains for children up to a year old. Online calculators can be found on the network that calculate the required weight of the baby, based on his height.

baby height and weight calculator

Select the gender and age of the baby to find out what the parameters of your child should be according to WHO (World Health Organization) standards

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Table of norms from birth to 1 year by month

MONTH OF LIFE	FOR BOYS, G.	FOR GIRLS, G.	AVERAGE WEIGHT GAIN, G.
1	400 — 1200	400 — 900	600
2	400 — 1500	400 — 1300	800
3	600 — 1300	500 — 1200	800
4	400 — 1300	500 — 1100	750
5	400 — 1200	300 — 1000	700
6	400 — 1000	300 — 1000	650
7	200 — 1000	200 — 800	600
8	200 — 800	200 — 800	550
9	200 — 800	100 — 600	500
10	100 — 600	100 — 500	450
11	100 — 500	100 — 500	400
12	100 — 500	100 — 500	350

Small increase - possible causes

If the weight gain does not correspond to the table values, you should think about the reasons that interfere with the healthy development of the baby. The most common causes of malnutrition are the following:

1. Incorrect attachment to the breast. Many mothers take the fact that the baby has begun to suck milk more slowly as a signal to stop feeding or transfer to another breast. As a result, the baby drinks only “front” milk, which is intended to quench thirst, and the thicker “back” milk remains unclaimed.
2. Blanket abuse. The infant becomes accustomed to sucking on a pacifier and continues to breastfeed in the same way during breastfeeding. At the same time, milk production slows down, because a smaller amount is sucked out in one feeding, and the body perceives this as evidence that a large amount of milk is no longer needed.
3. Supplementation with water or baby teas leads to a decrease in calorie intake.
4. Separation of child from mother for the first few days after childbirth, associated with poor health of one of them, leads to a deterioration in the sucking skill or its late development.
5. Painful condition of the baby: prematurity, jaundice, colds, hidden organ defects negatively affect appetite - the body throws all its forces into fighting the disease, and not into feeding and gaining weight.
6. Features of the mammary glands of the mother: an incorrectly shaped nipple or underdeveloped channels through which milk flows, leads to the complication of feeding. In this case, special devices that change the shape of the nipple, as well as expressing milk and feeding the baby with a bottle, will help.
7. Hormonal disruptions in the body and breast surgery also affect the amount of milk.
8. stressful state the mother is subtly felt by the child, therefore, excessive nervousness about the quality and quantity of milk, the weight of the baby, the frequency of feeding leads to a reduction in the amount of milk produced.
9. Feeding frequency: doctors recommend giving the baby a breast at the first peep, and at night not waking up a sleeping baby just because "he has not eaten for 3 hours." Force-feeding leads to stress and can result in the complete rejection of the baby from the breast.

Important! Remember: healthy child will not leave you hungry. As soon as he feels hungry, the mother will be informed about this by squeaking or crying. Forced feeding on a schedule negatively affects the activity of the digestive tract.

Bad set: the opinion of Dr. Komarovsky

Famous pediatrician Evgeny Komarovsky believes that if a child gains little weight, but the indicators still fit into the table or there are deviations of up to 10%, do not panic.

All children are different, and heredity plays a significant role in the development of the baby, which can “emerge” even after several generations.

Important! If there are no complaints about physical development child, and his weight is slowly but increasing - you can limit yourself to complementary foods from artificial mixtures. If the weight “stands” for a month or more, this is also a normal situation, often occurring by the end of the first year of life.

If the indicators are significantly different from those considered normal, you need to visit your pediatrician and talk about what worries you about slow weight gain. A complete examination of the baby and a clinical analysis of blood and urine will help to understand whether there is reason for concern and whether any pathology is hidden behind this symptom.

Large increase: possible causes

In the event that a child gains weight significantly more than children of his age, it is worth reconsidering his lifestyle. The most common cause of overweight under the age of one year is:

Children's doctors agree: if there are no complaints about the well-being and development of the child, you should not try to match the indicators of the tables.

Most of them were created in the course of research on the development of children who were on artificial feeding, in the 60s of the last century, so in modern realities they are often irrelevant.

Important! If there are changes in the behavior of the child, he began to sleep more or vice versa - more awake, the number of urination, the color of urine or feces has changed - regardless of compliance with the norms, it is necessary to seek medical help.

Schedule for premature babies

If a child was born prematurely, the rate of development of the organism directly depends on what was the weight of the child at birth. Normal increase in weight will have the following values:

Age in months	Weight gain, taking into account birth weight, g.
	800 - 1000	1001 - 1500	1501 - 2000	2001 - 2500
1	180	190	190	800
2	400	650	700-800	800
3	600-700	600-700	700-800	700-800
4	600	600-700	800-900	700-800
5	550	750	800	700
6	400	650	700-800	800
7	750	800	700	700
8	500	600	700	700
9	500	550	450	700
10	450	500	400	400
11	500	300	500	400
12	450	350	400	350

During the first year of life, the body of a little man develops rapidly.

A good way to monitor whether he is getting enough nutrients is to track his weight gain and compare it to normal. If the child is gaining weight slowly or too quickly, this is a reason to consult a pediatrician.

Early children have always been considered special. They are born ahead of time. And, therefore, they are not yet ready to begin their lives outside the womb. They really need the constant attention of surrounding adults, especially mothers. In the shortest possible time, they must catch up with their peers. The most important period is the first year. At this time, weight gain occurs.

Why do premature babies gain weight poorly?

These babies are born weak. The main indicator of their health and development is weight gain. It occurs more actively than in full-term children.

The lag is also observed in the development of the nervous system. If such children are given the attention they need, by the age of two the difference becomes imperceptible. Such children will no longer be different from their peers.

Breast milk is of great importance in case of poor weight gain in premature babies.

Breast milk has a unique composition, in many respects it differs from the milk of a mother whose babies were born full-term.

Mother's milk has a number of advantages:

• by the amount of protein. It is necessary for the accelerated growth of the body;
• high content of oligosaccharides in milk. They are considered stimulants for the growth of intestinal microflora, help to successfully digest food;
• low lactose content;
• a high content of antibodies that protect the baby from infections.

Premature babies spend a lot of time sleeping. The initiator of the meal, in this case, will be the mother. The baby should be awakened or put his sleepy papilla in his mouth. The baby sucks weakly, gets tired quickly. After such feedings, you need to express. Such actions will allow you to breastfeed for a long time.

Weight control. If a premature baby is not gaining weight well, start a notebook of breastfeeding, feeding, note how many urinations there were. It is better to feed the baby when he is sleeping so that there is no getting used to the bottle.

It happens that newborns add poorly in body weight the first four weeks after birth. In such cases, you should quickly identify the cause of the shortfall, make the right decision to eliminate it.

Reasons why a premature baby does not gain weight can be as follows:

• malnutrition. As a result of the small amount of food that enters the child's body, there is nowhere to take calories from. You should make sure that the baby is properly attached to the chest, listen to whether there are sips when feeding;
• poor appetite of the baby;
• stressful state of the mother, newborn. Baby feels the absence of love native person. Emotional perception of the world is disturbed;
• health problems. In such cases, you should immediately warn the local pediatrician;
• mother's bad habits.

How fast do premature babies gain weight?

The process may be considered fast if the food is complete. It is considered as such when it makes up for the perfect energy costs. A full-fledged weight gain occurs when the baby, along with milk, receives the necessary protective substances, microelements. Weight gain in premature babies is not without some difficulties. Such a phenomenon is quite natural.

Nutritional problems of premature babies:

1. the child is born when the stomach and intestines have not yet fully developed;
2. eating is difficult. Enzymes show low activity;
3. the baby is not able to properly suck, swallow;
4. food is often spit up.

The best food for premature babies is breast milk.

It is vital for them. Milk adapts in its composition to the needs of the newborn, meets his needs.

How is the weight gain going?

Having appeared ahead of time, the baby is gaining about 120 grams weekly. Therefore, in order to control his weight, one should keep records, know, accordingly, what he was at the time of birth. In three months, the body weight of such a baby should double. She will triple in size by the age of one. These figures are only for premature babies.

After birth, all children lose their grams, which are then gradually restored.

It should be remembered that weight gain will not begin without stabilization of its condition. In a premature baby, the losses are much higher. It requires a special diet.

The addition of grams depends on the frequency of feeding. Such children sleep a lot, the process of eating takes longer. However, this does not affect the amount of milk eaten.

Until the first year, the body weight of babies can be different. It is associated with:

• heredity;
• nutrition of the mother herself;
• the environment in the family;
• ecological situation.

There are 4 degrees of prematurity in children. They are associated with birth weight, gestational age.

In the table you can see how premature babies of all four degrees of prematurity gain weight.

Table of the rate of weight gain in premature babies:

Age by month	Degrees of prematurity with birth weight
	I (from 2001 to 2500 kg)	II (from 1501 to 2000 kg)	III (from 1001 to 1500 kg)	IV (from 800 to 1000 kg)
1	300	190	190	180
2	800	700-800	650	400
3	700-800	700-800	600-700	600-700
4	700-800	600-900	600-700	600
5	700	800	750	650
6	700	700	800	750
7	700	600	950	500
8	700	700	600	500
9	700	450	650	500
10	400	400	500	450
11	400	500	300	500
1 year	350	400	350	450
Total increase for 1 year	=9450	=8650	=8450	=7080

The weight gain table of a premature baby shows that such a phenomenon cannot be called a pathology. Children gain the norm during the first year, overtake peers born with normal weight. It should not be forgotten that the table provides approximate data, which may differ in any direction. A premature baby, when he began to gain weight, should still be examined monthly by a pediatrician.

After the examination, the doctor conducts:

• assessment of his development, health;
• corrects nutritional norms;
• will calculate the norms of complementary foods;
• will give certain recommendations on its input;
• advise what vitamin supplements to give the baby.

How do premature babies gain weight at 25 weeks? A child born much prematurely gains its grams faster with direct contact with the mother. If there aren't any serious problems, discharge such children from the hospital with a weight of 2000 grams. Careful control of body weight is necessary for the first two weeks. Every day it should increase by 30 grams. Low gains indicate problems with the digestion of food.

Children born prematurely may be developmentally delayed. Care for them should be approached with great attention, patience, responsibility. provoke premature birth can be an infection, pathology of the placenta, illness of the mother herself.

What to do if a premature baby is not gaining weight well?

It is important that children grow up healthy and strong, so breastfeeding plays a significant role in solving this problem. Experts have proven that premature babies should gain weight by eating mother's milk rather than formula.

In its composition, mother's milk is unique, as it contains:

• much more protein, amino acids. Babies born prematurely are strongly advised to drink only mother's milk in order to develop faster;
• the increased content of oligosaccharides helps to stabilize growth, and improve digestion.

The weight gain of a premature baby by months will begin if the baby is correctly applied to the breast. Further growth of the baby depends on the completeness of milk absorption. Thus, forging breastfeeding- the main factor that allows you to successfully raise a baby. There is a special table that allows you to track what dose the baby should suck out every month.

Due to various circumstances, premature babies are born. The development of such crumbs occurs differently compared to full-term children. With the correct observance of all conditions by twelve months, such crumbs correspond in development to babies born on time.

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External characteristics of premature babies

How do premature babies grow?

Before embarking on the study of the characteristics of infants born earlier due date, their characteristic features should be studied.

In children of this group clearly stands out:

• manifestation of lethargy and weakness;
• tiny stature;
• small values ​​of mass;
• lack of skin on fontanelles;
• pronounced redness of the body;
• a thin layer of the auricles;
• displacement of a large fontanel;
• the presence of "lanugs" - soft hair bundles;
• unformed external genital organs;
• disproportionately big head;
• huge belly with a low location of the navel;
• transparent thin nail plates;
• short arms, legs and neck.

The described signs indicate the incomplete development of the baby and the need to create comfortable conditions for its further formation. Most often, the weight of a premature baby does not exceed two kilograms.

Important! Prematurity of a peanut is not a pathology, but only a consequence of early labor activity.

In such a situation, parents should concentrate all their efforts on the timely development of the baby.

Development features

How do premature babies develop? Babies are considered premature if they are born after twenty-four weeks of pregnancy. There are some nuances in the development of children of this group, which are manifested in the following:

1. A special type of functioning of the nervous system. The functioning of the nervous apparatus differs from the work of the nervous system of ordinary newborns. Therefore, babies who were born ahead of schedule are demanding of attention, especially from the mother. In the house, you should create maximum comfort, and surround the baby with care and affection.
2. Late development of behavioral skills. Children who were born before the allotted time master behavioral skills later than their peers. For example, when the baby appeared at thirty-two weeks of pregnancy, the duration of his lagging behind his peers was at least three months.
3. The use of jugs. If the weight of the baby that was born does not exceed one and a half kilograms, then for its further development it is required use of incubators. Komarovsky believes that only the conditions of incubators make it possible to grow a baby to a healthy weight, since they are as close as possible to intrauterine. An increase in body weight up to two kilograms causes the crumbs to move to the crib, with special heating.

The use of thermoregulatory conditions for premature babies is very significant, as it directly affects the further development of the baby.

Premature babies should be kept in a room where the thermal regime does not fall below twenty degrees Celsius, and the humidity index is below fifty percent.

Features of the development of premature babies studied in detail on numerous examples.

Mothers of such crumbs should familiarize themselves with special literature and monitor the development of their baby.

Deviation or a long delay in the development of a premature baby is a signal of an immediate visits to a pediatrician. This will avoid the appearance of undesirable consequences, and sometimes saves the life of the baby.

How they develop over the months

Premature babies develop somewhat differently after birth than their peers. At first, their body tries to gain the required weight and “finish” the organs. The development of a premature baby by months to a year is clearly seen in the following table.

Baby's age from birth	From birth
	weighs less than 1 kg	weighs 1.5 kg	weighs 2 kg	weighs 2.5 kg
	Weight gain in grams
Monthly	180	190	190	300
Bimonthly	400	650	750	800
three month old	650	650	750	750
four month old	600	650	850	750
Five month old	650	750	800	700
six month old (half-year-old)	750	800	700	700
seven month old	500	950	600	700
eight month old	500	600	700	700
Nine months	500	600	700	700
ten month old	450	500	400	400
eleven month old	500	300	500	400
one year old	450	350	450	300

The table illustrates the development by months in the form of a monthly increase in body weight. The data given are averages and may vary in individual cases.

Depending on the weight of the newborn at early birth, the following are distinguished: categories of prematurity:

1. Body weight ranges from two thousand grams to two and a half thousand grams. The first category includes babies born at the stage from the thirty-sixth to the thirty-seventh week of pregnancy. By the age of twelve months, the mass of such children increases at least four times.
2. Weight from one and a half thousand grams to two thousand grams. This category of crumbs includes newborns born from thirty-two to thirty-five weeks of gestation. In a year, the weight of the described crumbs increases at least five times.
3. The mass of babies is from a thousand grams to one and a half thousand grams. "Deeply premature babies" - children of this category. They are born before thirty weeks of pregnancy. By twelve months, their body weight increases at least six times compared to the original.
4. Children weighing less than a thousand grams. Infants born at six months of age have extreme body weight. At proper care by the year they are eight times larger in weight.

Each premature baby is the result of a pregnant woman’s incorrect behavior or the presence of pathologies in her. Therefore, you should not complain about others, but pull yourself together and start proper care for the newborn, if this could not be done while he was in the womb.

The rate of weight gain in premature babies is an important indicator by which the development of the baby is monitored. Depending on how quickly and in what quantity the child adds, one can judge possible problems about what extra care he might need.

Premature babies need special attention: it is important to monitor the nutrition of babies, how they gain weight. Due to the immaturity of the gastrointestinal tract, low enzyme activity, lack of a sucking or swallowing reflex, and stomach aversion to food, these babies may have numerous feeding difficulties. An indicator such as weight gain in premature newborns helps to understand how well the baby’s nutrition is organized, and whether correction of the frequency and quality of feeding is required.

What are the degrees of prematurity

Premature babies are born before the 37th week of pregnancy, weighing less than 2.5 kg. Depending on what week of pregnancy the baby was born and on its weight, there are 4 degrees of prematurity:

• I degree of prematurity - babies born at 35 - 37 weeks with a weight of 2-2.5 kg;
• II degree of prematurity - babies born at 32 - 34 weeks with a weight of 1.5-2 kg;
• III degree of prematurity - children born at 29 -31 weeks weighing 1 - 1.5 kg, the third degree of prematurity is considered deep;
• IV degree of prematurity - children born before 29 weeks weighing less than a kilogram, this degree of prematurity is considered extreme.

Development features

The development of premature babies has its own characteristics. This also manifests itself in appearance, and in the immaturity of the development of organs and systems. What is the difference between the development of a premature baby:

• A special type of work of the nervous system, it functions differently than in normal newborns. Nervous system the child did not have time to go through all the stages of development, which affects the violation of thermoregulation, a decrease in tone. Such babies need even more attention, especially from their mothers. The baby is surrounded by care, affection, comfort.
• Toddlers learn behavioral skills later than their peers.
• If the weight of the baby is less than one and a half kilograms, for normal development, he needs to be in the incubator. This is a kind of incubator, where they create and maintain an artificial microclimate (temperature, humidity, oxygen content) that is optimal for the baby. If the baby has a large enough mass, he no longer needs the incubator, but the room in which the baby is located should be warm and sufficiently humid.

Development of premature babies by months

In the first months after birth, doctors distinguish three main stages, differing from each other in the child's weight gain and nutritional needs.

The first stage - the child loses weight. This happens in both full-term and premature babies. But in premature babies, weight loss is greater (normally, babies lose 5-6% of their weight, and premature babies from 10 to 15%). The amount of food during this period is minimal, but must be of high quality in order to provide the body with all the necessary nutrients.

The second stage is the stabilization of the condition, the baby can independently suck on the breast or bottle. Babies weighing 2.5 kg are already being transferred from the department with premature babies. The estimated weight gain for premature babies is about 125-200 grams per week.

The third stage - lasts up to a year (but for very premature babies even longer). At this stage, much attention is paid to the nutrition of the baby, proper feeding allows you to reduce the developmental lag from peers.

How is the weight gain of a premature baby by months with different degrees of prematurity

Depending on the time when the baby was born and body weight at birth, the intensity of weight gain will vary.

First degree prematurity:

Month	Weight gain, grams
1	300
2	800
3	700-800
4	700-800
5	700
6	700
7	700
8	700
9	700
10	400
11	400
12	350

The second degree of prematurity - a table of weight gain in premature babies by months:

Month	Weight gain, grams
1	190
2	700-800
3	700-800
4	600-900
5	800
6	700
7	600
8	700
9	450
10	400
11	500
12	400

Third degree of prematurity:

Month	Weight gain, grams
1	190
2	650
3	600-700
4	600-700
5	750
6	800
7	950
8	600
9	650
10	500
11	300
12	350

The fourth degree of prematurity - the rate of weight gain:

Month	Weight gain, grams
1	180
2	400
3	600-700
4	600
5	650
6	750
7	500
8	500
9	500
10	450
11	500
12	450

Height gains

Depending on the degree of prematurity, the increase in the growth of the baby will also differ.

Table growth increase in premature babies

Month	I degree, cm	II degree, cm	III degree, cm	IV degree, cm
1	3,7	3,8	3,7	3,9
2	3,6	3,9	4	3,5
3	3,6	3,6	4,2	2,5
4	3,3	3,8	3,7	3,5
5	2,3	3,3	3,6	3,7
6	2,0	2,3	2,8	3,7
7	1,6	2,3	3	2,5
8	1,5	1,8	1,6	2,5
9	1,5	1,1	2,1	4,5
10	1,5	0,8	1,7	2,5
11	1,0	0,9	0,6	2,2
12	1,2	1,5	1,2	1,7