Cluster

parameters

AIC

χ r e d 2

Q

D

P K S

NGC 2362

a = 4.80 , b = 8.38 , c = 12.01

37.63

1.86

0.016

0.064

0.2

NGC 6611

a = 1.4 , b = 4.8 , c = 8

64.34

3.43

1.96 × 10−6

0.105

0.017

γ Velorum

a = 2.53 , b = 6.5 , c = 0.00046

83.08

4.53

1.25 × 10−9

0.15

2.8 × 10−5

Berkeley 59

a = 2.2 , b = 5.09 , c = 1

100.6

5.56

8.6 × 10−13

0.179

2.93 × 10−12