Age (years)

Autumn

65 days, Mar to May

Winter

100 days, May to Sep

Spring

100 days, Sep to Dec

Summer

100 days, Dec to Mar

0.25-1.25

1.50

1.90

2.50

2.40

1.25-2.25

2.20

2.60

0.30

2.80

2.25-3.25

2.20

3.10

3.50

3.30

3.25-4.25

1.80

3.10

3.50

3.50

4.25-5.25

1.80

3.20

4.00

3.60

>5.25

1.80

3.30

3.90

3.50