condition mean min max 2 h after light 6.83062 5.51693 9.07183 6 h after light 5.91438 5.08743 6.90801 10 h after light 5.21693 4.44086 6.52667 14 h after light 6.614644999999999 4.06211 10.1023 18 h after light 7.0405983333333335 5.20733 8.73161 2 h after dark 8.695013333333334 7.49023 10.8943