condition mean min max 4 h after light 4.66572 0.0 7.45676 8 h after light 11.001823333333334 1.43777 19.3339 12 h after light 9.510256666666667 7.48037 13.4261 4 h after dark 11.778543333333333 4.20603 16.8637 8 h after dark 10.04647 2.80965 21.0907 12 h after dark 3.33261 0.0 6.30192