condition	mean	min	max
4 h after light	6.27811	6.09595	6.46027
8 h after light	5.6491	5.20881	6.08939
12 h after light	5.431685	5.07905	5.78432
4 h after dark	8.88287	8.71942	9.04373
8 h after dark	7.01294	6.92018	7.19158
12 h after dark	6.53531	5.22442	7.76062