condition	mean	min	max
4 h after light	7.220836666666667	7.10043	7.44376
8 h after light	6.872473333333334	6.66898	7.265210000000001
12 h after light	6.83932	6.41563	7.571510000000001
4 h after dark	7.0537	6.38858	7.991689999999999
8 h after dark	7.404086666666666	6.79709	8.14353
12 h after dark	7.73229	7.42133	7.92805