"field" "sulfur" "type" "y"
"1" 1 "low" "A" 5.03
"2" 1 "low" "B" 5.24
"3" 1 "low" "A" 4.56
"4" 1 "low" "B" 5.41
"9" 2 "high" "B" 5.75
"10" 2 "high" "A" 5.04
"11" 2 "high" "A" 5.19
"12" 2 "high" "B" 5.88
"13" 3 "high" "B" 5.05
"14" 3 "high" "A" 4.59
"15" 3 "high" "A" 4.66
"16" 3 "high" "B" 5.36
"5" 4 "low" "B" 4.9
"6" 4 "low" "A" 4.09
"7" 4 "low" "A" 4.45
"8" 4 "low" "B" 4.9