condition	mean	min	max
4 h after light	6.474123333333334	6.18235	6.672960000000001
8 h after light	6.420396666666666	6.38247	6.454219999999999
12 h after light	6.495433333333334	6.19489	6.65446
4 h after dark	6.718196666666667	6.51405	6.90948
8 h after dark	6.9693000000000005	6.685630000000001	7.19446
12 h after dark	7.14974	6.9577100000000005	7.430630000000001