condition mean min max 4 h after light 597.9263980000001 568.616672 627.236124 8 h after light 668.202807 569.594599 766.811015 12 h after light 737.2188185 647.832354 826.605283 4 h after dark 737.6589765 712.990325 762.327628 8 h after dark 530.5673595000001 530.154444 530.980275 12 h after dark 432.082769 432.082769 432.082769