condition	mean	min	max
4 h after light	7.236693333333333	7.0159199999999995	7.43842
8 h after light	7.227273333333334	7.0445	7.4294
12 h after light	7.07247	6.908930000000001	7.1933
4 h after dark	6.95576	6.6077	7.21658
8 h after dark	6.83517	6.46331	7.1451199999999995
12 h after dark	6.786573333333333	6.35005	7.23945