condition mean min max 0 h after light 9.988335 8.74027 11.2364 4 h after light 16.4102 13.4244 19.396 8 h after light 7.762375 7.58548 7.93927 4 h after dark 9.30542 7.14064 11.4702 8 h after dark 12.8756 12.3413 13.4099 12 h after dark 8.803165 7.92089 9.68544