condition	mean	min	max
4 h after light	6.769800000000001	6.698360000000001	6.853910000000001
8 h after light	6.700863333333333	6.589510000000001	6.81192
12 h after light	6.583469999999999	6.4823699999999995	6.759289999999999
4 h after dark	6.920803333333334	6.82198	7.0282800000000005
8 h after dark	6.84823	6.73031	6.98267
12 h after dark	7.200553333333334	6.82627	7.567310000000001