condition mean min max 0 h after light 2.1527849999999997 2.11408 2.19149 4 h after light 2.534925 2.10891 2.96094 8 h after light 2.51776 2.49269 2.54283 4 h after dark 3.835165 3.27628 4.39405 8 h after dark 3.95449 3.71714 4.19184 12 h after dark 2.086615 1.78326 2.38997