Data/trees.csv

   1 "","Girth","Height","Volume"
   2 "1",8.3,70,10.3
   3 "2",8.6,65,10.3
   4 "3",8.8,63,10.2
   5 "4",10.5,72,16.4
   6 "5",10.7,81,18.8
   7 "6",10.8,83,19.7
   8 "7",11,66,15.6
   9 "8",11,75,18.2
  10 "9",11.1,80,22.6
  11 "10",11.2,75,19.9
  12 "11",11.3,79,24.2
  13 "12",11.4,76,21
  14 "13",11.4,76,21.4
  15 "14",11.7,69,21.3
  16 "15",12,75,19.1
  17 "16",12.9,74,22.2
  18 "17",12.9,85,33.8
  19 "18",13.3,86,27.4
  20 "19",13.7,71,25.7
  21 "20",13.8,64,24.9
  22 "21",14,78,34.5
  23 "22",14.2,80,31.7
  24 "23",14.5,74,36.3
  25 "24",16,72,38.3
  26 "25",16.3,77,42.6
  27 "26",17.3,81,55.4
  28 "27",17.5,82,55.7
  29 "28",17.9,80,58.3
  30 "29",18,80,51.5
  31 "30",18,80,51
  32 "31",20.6,87,77