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Table 1 Geographic split of our Penumbra (PN) and GitHub (GH) [14] samples

From: The penumbra of open source: projects outside of centralized platforms are longer maintained, more academic and more collaborative

Region

% Hosts

% PN users

% GH users [14]

PN repositories (per capita)

% Unique emails from academic domains

EU

39.35

73.47

26.8

83,612 (1.52 × 10−4)

39.20

NA

26.37

15.81

34

51,245 (2.97 × 10−4)

41.22

AS

30.95

7.38

30.7

21,765 (1.55 × 10−5)

1.21

SA

1.46

1.36

4.9

2776 (1.64 × 10−5)

12.41

OC

1.60

1.93

1.7

3347 (2.58 × 10−4)

65.24

AF

0.28

0.04

2

215 (9.44 × 10−7)

0.00