condition	mean	min	max
4 h after light	9.550823333333334	9.391689999999999	9.66483
8 h after light	9.62276	9.552719999999999	9.75723
12 h after light	9.447426666666667	9.22262	9.56568
4 h after dark	9.550836666666667	9.50619	9.591280000000001
8 h after dark	9.45389	9.26484	9.6162
12 h after dark	9.39904	9.326410000000001	9.46412