condition	mean	min	max
4 h after light	6.16063	6.04151	6.24579
8 h after light	5.95325	5.85759	6.1293
12 h after light	6.002126666666666	5.85684	6.14379
4 h after dark	6.250053333333334	6.17251	6.3362300000000005
8 h after dark	6.19324	6.07787	6.29084
12 h after dark	6.229533333333333	6.1081199999999995	6.45828