condition	mean	min	max
4 h after light	4.064186666666667	3.89835	4.21033
8 h after light	4.083876666666667	4.06275	4.10743
12 h after light	4.05331	3.96538	4.16596
4 h after dark	4.090513333333333	4.08063	4.10435
8 h after dark	4.11118	4.06324	4.18804
12 h after dark	4.15568	4.07244	4.27033