condition mean min max 0 h after light 0.669349 0.446763 0.891935 4 h after light 0.3352905 0.329775 0.340806 8 h after light 0.16705 0.113492 0.220608 4 h after dark 0.3843295 0.218999 0.54966 8 h after dark 0.549491 0.110731 0.988251 12 h after dark 0.4429435 0.217834 0.668053