condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0291 0.0 0.0582 8 h after light 0.02907185 0.0 0.0581437 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0283646 0.0 0.0567292 12 h after dark 0.0278999 0.0 0.0557998