condition	mean	min	max
4 h after light	7.08476	6.40756	7.76196
8 h after light	5.191245	5.00417	5.37832
12 h after light	6.57645	6.34942	6.80348
4 h after dark	11.550533333333334	11.2591	11.8395
8 h after dark	13.8344	12.7357	15.976
12 h after dark	10.756023333333333	9.49477	11.8089