condition	mean	min	max
0 h after light	15.6756	15.5907	15.7605
4 h after light	13.1675	12.8562	13.4788
8 h after light	19.91865	17.7149	22.1224
4 h after dark	18.877000000000002	18.1889	19.5651
8 h after dark	15.7676	15.2497	16.2855
12 h after dark	14.686800000000002	13.6353	15.7383