condition mean min max 4 h after light 2.7817499999999997 2.34196 3.22154 8 h after light 2.9419399999999998 2.80183 3.08205 12 h after light 3.3895999999999997 3.34989 3.42931 4 h after dark 2.9041433333333333 2.56471 3.23217 8 h after dark 3.3355799999999998 2.85794 4.09528 12 h after dark 3.1148766666666665 2.5568 3.68935