condition	mean	min	max
4 h after light	20.141	17.5709	22.7111
8 h after light	15.41615	14.8603	15.972
12 h after light	22.6547	22.051	23.2584
4 h after dark	28.14945	26.5054	29.7935
8 h after dark	36.7499	35.6895	37.8103
12 h after dark	30.89535	30.4501	31.3406