condition	mean	min	max
4 h after light	1840.505	1713.79	1967.22
8 h after light	1245.055	1241.98	1248.13
12 h after light	1449.395	1364.93	1533.86
4 h after dark	1605.315	1419.88	1790.75
8 h after dark	1462.5949999999998	1420.32	1504.87
12 h after dark	1690.125	1609.2	1771.05