condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.23889100000000002 0.235488 0.242294 4 h after dark 0.0 0.0 0.0 8 h after dark 0.117212 0.0 0.234424 12 h after dark 0.0 0.0 0.0