condition	mean	min	max
4 h after light	21.16555	19.7172	22.6139
8 h after light	24.3592	24.0587	24.6597
12 h after light	34.76495	33.8973	35.6326
4 h after dark	55.9988	54.3406	57.657
8 h after dark	60.71365	60.4928	60.9345
12 h after dark	44.13465	43.2952	44.9741