condition mean min max 0 h after light 0.2188635 0.167404 0.270323 2 h after light 0.0 0.0 0.0 4 h after light 0.0410237 0.0 0.0820474 8 h after light 0.043221 0.0 0.086442 12 h after light 0.0477724 0.0 0.0955448 2 h after dark 0.172345 0.0 0.34469 4 h after dark 0.0402243 0.0 0.0804486 8 h after dark 0.136185 0.0 0.27237 12 h after dark 0.2182395 0.178695 0.257784