condition mean min max 4 h after light 137.2717155 127.760286 146.783145 8 h after light 160.8405925 147.606506 174.074679 12 h after light 263.988315 179.462826 348.513804 4 h after dark 306.0278245 226.403955 385.651694 8 h after dark 334.193595 261.924364 406.462826 12 h after dark 188.607995 188.607995 188.607995