condition mean min max 0 h after light 3.215485 2.65905 3.77192 4 h after light 3.49411 3.13158 3.85664 8 h after light 2.31246 2.27531 2.34961 4 h after dark 4.399205 4.39053 4.40788 8 h after dark 2.208945 1.80372 2.61417 12 h after dark 3.236015 2.65075 3.82128