condition	mean	min	max
4 h after light	18.95125	18.6865	19.216
8 h after light	14.12325	13.3366	14.9099
12 h after light	12.968250000000001	12.1126	13.8239
4 h after dark	16.80935	15.4432	18.1755
8 h after dark	21.99205	21.7206	22.2635
12 h after dark	22.826050000000002	21.5748	24.0773