condition mean min max 0 h after light 5.44466 4.49761 6.39171 4 h after light 7.08343 6.60003 7.56683 8 h after light 7.225440000000001 6.0689 8.38198 4 h after dark 7.359735000000001 7.19083 7.52864 8 h after dark 8.79175 8.5183 9.0652 12 h after dark 5.94132 5.82425 6.05839