Table 4 Fire return interval analyses by study site and by region (all three sites combined) in Pinus roxburghii forest of Uttarakhand, India, 2017. Study site codes are shown in Table 1. All composite analyses are based on a minimum of two samples and two fire scars

 Total number of intervals

19

12

14

38

 Mean fire interval (yr)

4.16

4.42

5.29

2.18

 Median fire interval (yr)

2

3

3.5

2

 Standard deviation (yr)

3.69

3.48

5.85

1.84

 Frequency (fires yr⁻¹)

0.24

0.23

0.19

0.46

 Coefficient of variation

0.89

0.79

1.11

0.84

 Skewness

1.79

1.67

2.88

2.69

 Kurtosis

3.13

2.42

9.11

8.81

 Minimum fire interval (yr)

1

1

1

1

 Maximum fire interval (yr)

15

13

24

10

 Weibull mean (yr)

4.2

4.46

5.34

2.21

 Weibull median (yr)

3.43

3.84

4.12

1.88

 Point mean fire interval (yr)

6.07

8.33

6.76

6.95