condition mean min max 4 h after light 5.6367899999999995 5.39699 5.81962 8 h after light 5.464156666666667 5.2906 5.78225 12 h after light 5.70807 5.48651 5.88016 4 h after dark 5.858896666666666 5.6346099999999995 6.28229 8 h after dark 5.91251 5.83206 6.00183 12 h after dark 5.846826666666667 5.65072 5.9703