condition mean min max 0 h after light 0.154308 0.0 0.308616 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.30522950000000004 0.303949 0.30651 12 h after dark 0.3048455 0.301489 0.308202