condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.23045633333333335 0.0 0.691369 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0