condition mean min max 3 h after light 1308.58 1271.77 1377.31 6 h after light 1004.563 933.937 1103.09 9 h after light 678.9363333333333 548.053 809.553 12 h after light 541.5073333333333 455.372 693.079 3 h after dark 707.3613333333333 573.202 805.669 6 h after dark 1521.6200000000001 1336.21 1672.92 9 h after dark 1779.0433333333333 1457.63 1986.13 12 h after dark 1347.58 1082.46 1550.23