condition	mean	min	max
4 h after light	8.364176666666667	8.11487	8.6378
8 h after light	8.332543333333332	8.262189999999999	8.403889999999999
12 h after light	8.19094	8.037189999999999	8.27512
4 h after dark	8.426023333333333	8.27246	8.55167
8 h after dark	8.38822	8.24917	8.481860000000001
12 h after dark	8.483346666666666	8.40835	8.62994