condition	mean	min	max
4 h after light	7.983163333333333	7.809089999999999	8.07718
8 h after light	8.042496666666667	7.7005	8.28883
12 h after light	7.8689100000000005	7.78534	7.97686
4 h after dark	7.808703333333334	7.6498800000000005	7.93328
8 h after dark	7.6438	7.56111	7.701789999999999
12 h after dark	7.717473333333333	7.54637	7.865639999999999