condition	mean	min	max
4 h after light	7.55197	7.424519999999999	7.65296
8 h after light	7.569246666666667	7.24177	7.829060000000001
12 h after light	7.49462	7.274560000000001	7.743239999999999
4 h after dark	7.710873333333333	7.4512	7.99055
8 h after dark	7.710700000000001	7.5305100000000005	7.931780000000001
12 h after dark	7.58656	7.42333	7.7455300000000005