condition	mean	min	max
4 h after light	7.8431999999999995	7.819369999999999	7.87913
8 h after light	7.91015	7.8216399999999995	7.958889999999999
12 h after light	7.87058	7.754560000000001	7.941960000000001
4 h after dark	7.75127	7.638210000000001	7.8574399999999995
8 h after dark	7.87267	7.8445100000000005	7.89796
12 h after dark	7.827613333333334	7.79943	7.85238