condition	mean	min	max
4 h after light	7.91183	7.814396	8.009264
8 h after light	7.622593	7.507326	7.73786
12 h after light	7.9801585	7.814396	8.145921
4 h after dark	7.520957	7.254069	7.787845
8 h after dark	8.1042185	8.002328	8.206109
12 h after dark	7.814396	7.814396	7.814396