condition	mean	min	max
4 h after light	7.062303333333333	6.9431899999999995	7.211010000000001
8 h after light	7.10383	6.83626	7.25811
12 h after light	7.2271133333333335	6.9324699999999995	7.376580000000001
4 h after dark	7.61852	7.43657	7.762560000000001
8 h after dark	7.72339	7.47965	7.91228
12 h after dark	7.816436666666666	7.5525199999999995	8.11392