condition mean min max 0 h after light 176.3825 175.062 177.703 4 h after light 189.554 189.046 190.062 8 h after light 222.5125 203.273 241.752 4 h after dark 321.1385 270.676 371.601 8 h after dark 229.70350000000002 218.354 241.053 12 h after dark 179.76350000000002 161.911 197.616