condition	mean	min	max
0 h after light	6.85161	6.58992	7.1133
4 h after light	6.768565	6.59498	6.94215
8 h after light	7.00254	6.96211	7.04297
4 h after dark	6.78903	6.68606	6.892
8 h after dark	7.26172	7.13338	7.39006
12 h after dark	6.64814	6.33078	6.9655