External border

$\overline{x}$ = 1.33

$\overline{x}$ = 0.63

s² = 11.8

s² = 0.78

Fitted model Negative binomial

χ² = 4.61

p < 0.05 df = 9

Fitted model Negative binomial

χ² = 4.12

p < 0.05 df = 2

k = 0.14

k = 2.30

Second

$\overline{x}$ = 1.01

$\overline{x}$ = 0.6

s² = 7.34

s² = 0.6

Fitted model Negative binomial

χ² = 0.22

Fitted model Poisson

χ² = 0.008

p < 0.05 df = 11

p < 0.01 df = 2

k = 0.14

Third

$\overline{x}$ = 2.17

$\overline{x}$ = 0.89

s² = 14.49

s² = 0.79

χ² = 1.77

Fitted model Negative binomial

χ² = 0.32

Fitted model Poisson

p < 0.05 df = 132

p < 0.01 df = 2

k = 0.32

Fourth

$\overline{x}$ = 1.91

$\overline{x}$ = 0.77

s² = 9.84

s² = 0.66

Fitted model Negative binomial

χ² = 0.49

Fitted model Poisson

χ² = 1.84

p < 0.05 df = 8

p < 0.01 df = 2

k = 0.38

Center

$\overline{x}$ = 2.43

$\overline{x}$ = 1.01

s² = 8.26

s² = 0.71

Fitted model Negative binomial

χ² = 0.17

Fitted model Poisson

χ² = 1.92

p < 0.05 df = 6

p < 0.01 df = 2

k = 0.85