condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0487365 0.0 0.097473 8 h after light 0.04890465 0.0 0.0978093 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0