condition	mean	min	max
4 h after light	6.8451233333333334	6.65982	6.95015
8 h after light	6.946199999999999	6.89567	7.041189999999999
12 h after light	6.8749199999999995	6.805219999999999	6.988689999999999
4 h after dark	6.862959999999999	6.799639999999999	6.950139999999999
8 h after dark	6.845203333333333	6.67755	7.06047
12 h after dark	6.6127166666666675	6.533930000000001	6.69256