Table 2 Comparison between DEM mean elevation of samples for establishing CRM and for validating CRM in Poyang Lake.

From: Obtaining elevation of Oncomelania Hupensis habitat based on Google Earth and it’s accuracy evaluation: an example from the Poyang lake region, China

Group of samples

No. of samples

Min. (m)

Max. (m)

Mean (m)

SD

CV(%)

Total

15086

5.0

19.7

12.79

1.39

10.87

CRM-establishing samples

10533

5.5

19.1

12.79

1.42

11.10

CRM-validating samples

4533

5.0

19.7

12.79

1.40

10.95

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