condition mean min max 4 h after light 1423.703023 1350.349652 1497.056394 8 h after light 1382.788894 1236.038039 1529.539749 12 h after light 1444.9588939999999 1332.983653 1556.934135 4 h after dark 1448.5671705 1270.671515 1626.462826 8 h after dark 1415.734833 986.695741 1844.773925 12 h after dark 1205.284154 1205.284154 1205.284154