condition	mean	min	max
4 h after light	4.17913	4.12679	4.26032
8 h after light	4.19166	4.0641300000000005	4.25716
12 h after light	4.154273333333333	4.00725	4.2333099999999995
4 h after dark	4.268126666666666	4.1039699999999995	4.58605
8 h after dark	4.106943333333333	4.044169999999999	4.1424199999999995
12 h after dark	4.065906666666667	3.95004	4.17805