condition	mean	min	max
0 h after light	9.238315	9.23008	9.24655
4 h after light	4.76952	4.62774	4.9113
8 h after light	5.856585	4.17585	7.53732
4 h after dark	8.578555	8.48955	8.66756
8 h after dark	7.680385	7.50326	7.85751
12 h after dark	9.27159	8.30128	10.2419