condition mean min max 0 h after light 0.130766 0.0 0.261532 2 h after light 0.0 0.0 0.0 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 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.136626 0.0 0.273252 12 h after dark 0.0 0.0 0.0