condition mean min max 4 h after light 1341.4092565 1331.362235 1351.456278 8 h after light 1341.499922 1272.306249 1410.693595 12 h after light 1180.001009 934.366545 1425.635473 4 h after dark 1300.079388 1233.563477 1366.595299 8 h after dark 1566.051394 1320.175849 1811.926939 12 h after dark 802.758941 802.758941 802.758941