condition mean min max 0 h after light 6.32384 5.90403 6.74365 4 h after light 9.812685 8.82817 10.7972 8 h after light 9.826260000000001 9.43182 10.2207 4 h after dark 7.248215 5.87814 8.61829 8 h after dark 9.53931 9.38865 9.68997 12 h after dark 7.939064999999999 7.2832 8.59493