condition	mean	min	max
4 h after light	8.376587	7.437372	9.315802
8 h after light	7.4345355	7.277605	7.591466
12 h after light	7.425518	7.344235	7.506801
4 h after dark	7.5949825	7.133287	8.056678
8 h after dark	6.7169675	6.659945	6.77399
12 h after dark	7.591466	7.591466	7.591466