condition mean min max 4 h after light 8.844245 8.661797 9.026693 8 h after light 8.267962 7.763534 8.77239 12 h after light 9.362025500000001 8.001169 10.722882 4 h after dark 7.949209 7.236621 8.661797 8 h after dark 8.958311 8.494737 9.421885 12 h after dark 8.661797 8.661797 8.661797