condition	mean	min	max
4 h after light	7.19926	7.0621	7.38686
8 h after light	7.19228	6.9945	7.4043600000000005
12 h after light	6.96653	6.73945	7.196439999999999
4 h after dark	7.19933	6.86867	7.51852
8 h after dark	7.30137	7.07748	7.69683
12 h after dark	7.331833333333333	7.04022	7.620239999999999