condition mean min max 4 h after light 634.6071039999999 564.155134 705.059074 8 h after light 601.4626945 539.369375 663.556014 12 h after light 536.3344825 486.129216 586.539749 4 h after dark 443.4744875 434.480231 452.468744 8 h after dark 483.7665115 477.263101 490.269922 12 h after dark 532.036919 532.036919 532.036919