condition	mean	min	max
4 h after light	7.898626666666667	7.80377	7.980910000000001
8 h after light	7.90588	7.77527	8.10196
12 h after light	7.964053333333334	7.862080000000001	8.09885
4 h after dark	8.522526666666668	8.2332	8.85898
8 h after dark	8.509039999999999	8.24673	8.818489999999999
12 h after dark	8.292646666666666	8.14476	8.48354