condition	mean	min	max
4 h after light	8.281	7.88925	8.67275
8 h after light	5.943385	4.98444	6.90233
12 h after light	6.86955	6.32965	7.40945
4 h after dark	7.190833333333333	6.60162	7.90131
8 h after dark	8.78504	8.18011	9.85025
12 h after dark	9.199273333333334	7.8434	10.7526