condition	mean	min	max
4 h after light	17.81255	13.9117	21.7134
8 h after light	13.1061	13.0412	13.171
12 h after light	8.654785	7.18037	10.1292
4 h after dark	7.844203333333334	7.32291	8.67388
8 h after dark	10.20983	9.05769	10.8164
12 h after dark	13.0308	11.8424	15.1375