condition	mean	min	max
4 h after light	4.601396666666666	4.55331	4.62676
8 h after light	4.68587	4.58798	4.74889
12 h after light	4.64077	4.58889	4.68035
4 h after dark	4.63241	4.52495	4.77543
8 h after dark	4.601723333333333	4.58301	4.617369999999999
12 h after dark	4.580573333333334	4.49592	4.66745