condition mean min max 0 h after light 1.81837 1.79438 1.84236 4 h after light 1.955355 1.56418 2.34653 8 h after light 2.7670199999999996 2.34426 3.18978 4 h after dark 2.895225 2.62395 3.1665 8 h after dark 3.39163 3.27617 3.50709 12 h after dark 1.73929 1.32881 2.14977