condition mean min max 4 h after light 1553.328817 1388.102965 1718.554669 8 h after light 1512.9221149999998 1502.766019 1523.078211 12 h after light 1485.9167725 1466.022222 1505.811323 4 h after dark 1329.326661 1086.624226 1572.029096 8 h after dark 1323.075588 1100.305134 1545.846042 12 h after dark 1404.105603 1404.105603 1404.105603