condition	mean	min	max
4 h after light	19.167450000000002	18.0578	20.2771
8 h after light	18.367150000000002	16.8156	19.9187
12 h after light	14.6876	14.2422	15.133
4 h after dark	14.044333333333334	12.1712	16.1602
8 h after dark	17.922833333333333	17.098	18.6655
12 h after dark	17.1787	15.1549	18.7317