condition	mean	min	max
4 h after light	8.52876	8.36085	8.68613
8 h after light	8.329786666666667	8.18563	8.458110000000001
12 h after light	8.65087	8.52661	8.82386
4 h after dark	8.280523333333333	7.986839999999999	8.55722
8 h after dark	8.267159999999999	7.999039999999999	8.724169999999999
12 h after dark	7.99431	7.63974	8.26745