condition	mean	min	max
4 h after light	6.3420499999999995	6.056769999999999	6.5042
8 h after light	6.03283	5.59463	6.27661
12 h after light	6.076153333333333	5.852180000000001	6.2439599999999995
4 h after dark	6.4523866666666665	6.27246	6.6741
8 h after dark	6.743693333333334	6.41983	7.039160000000001
12 h after dark	6.7879233333333335	6.60882	7.0460199999999995