condition	mean	min	max
4 h after light	9.279303333333333	9.052489999999999	9.57305
8 h after light	9.341926666666668	9.11135	9.64558
12 h after light	9.46111	9.34125	9.561819999999999
4 h after dark	9.395366666666666	9.15215	9.555439999999999
8 h after dark	9.47903	9.292539999999999	9.58617
12 h after dark	9.205440000000001	9.15801	9.28968