condition mean min max 4 h after light 6.222745 4.89882 7.54667 8 h after light 6.3388100000000005 5.94287 6.73475 12 h after light 10.035530000000001 9.95156 10.1195 4 h after dark 11.642299999999999 11.6337 11.6509 8 h after dark 9.78378 9.65966 9.9079 12 h after dark 8.78439 8.39641 9.17237