condition	mean	min	max
4 h after light	19.674	18.8198	20.5282
8 h after light	14.24485	13.9206	14.5691
12 h after light	15.09555	14.5154	15.6757
4 h after dark	17.519099999999998	17.2438	17.8483
8 h after dark	19.4403	18.4823	20.1844
12 h after dark	20.202866666666665	19.4516	21.6002