condition	mean	min	max
4 h after light	4.11813	4.09569	4.13711
8 h after light	4.222886666666667	4.165690000000001	4.2813
12 h after light	4.13165	4.06975	4.21139
4 h after dark	4.17229	4.05917	4.23745
8 h after dark	4.13089	4.02118	4.25697
12 h after dark	4.19531	4.116280000000001	4.25135