condition	mean	min	max
4 h after light	18.38315	18.3376	18.4287
8 h after light	18.8763	14.5307	23.2219
12 h after light	21.8857	20.065	23.7064
4 h after dark	34.3321	28.6825	38.8092
8 h after dark	43.62583333333333	24.0705	59.5445
12 h after dark	20.9494	19.4479	23.7566