condition mean min max 4 h after light 1957.4203045 1453.549103 2461.291506 8 h after light 2064.9260025000003 1801.235333 2328.616672 12 h after light 1761.410926 1484.739041 2038.082811 4 h after dark 1239.447039 1014.817214 1464.076864 8 h after dark 1142.5326504999998 1094.564013 1190.501288 12 h after dark 798.001473 798.001473 798.001473