condition	mean	min	max
4 h after light	3.8953133333333336	3.7935300000000005	4.04948
8 h after light	3.8976100000000002	3.8247800000000005	3.9405699999999997
12 h after light	3.8003733333333334	3.7706800000000005	3.85543
4 h after dark	3.9270199999999997	3.8749	3.96825
8 h after dark	3.8177333333333334	3.76606	3.8939800000000004
12 h after dark	3.746983333333333	3.6638599999999997	3.8218199999999998