condition mean min max 0 h after light 63.254400000000004 62.179 64.3298 4 h after light 23.7735 22.2758 25.2712 8 h after light 8.695645 8.44128 8.95001 4 h after dark 16.19595 15.6097 16.7822 8 h after dark 37.66335 34.8958 40.4309 12 h after dark 63.11835 55.9705 70.2662