condition mean min max 4 h after light 316.2610335 264.569254 367.952813 8 h after light 359.62415 341.204482 378.043818 12 h after light 437.229343 369.180629 505.278057 4 h after dark 635.801694 440.217485 831.385903 8 h after dark 849.0567085 632.385903 1065.727514 12 h after dark 516.859948 516.859948 516.859948