condition mean min max 4 h after light 4.5012099999999995 4.38497 4.66271 8 h after light 4.47905 4.420780000000001 4.5755099999999995 12 h after light 4.47984 4.36699 4.66745 4 h after dark 4.547503333333333 4.49472 4.6195 8 h after dark 4.48347 4.42831 4.51905 12 h after dark 4.43909 4.35939 4.5845199999999995