{"catalyst":"A","concent":58.2}
{"catalyst":"A","concent":57.2}
{"catalyst":"A","concent":58.4}
{"catalyst":"A","concent":55.8}
{"catalyst":"A","concent":54.9}
{"catalyst":"B","concent":56.3}
{"catalyst":"B","concent":54.5}
{"catalyst":"B","concent":57}
{"catalyst":"B","concent":55.3}
{"catalyst":"C","concent":50.1}
{"catalyst":"C","concent":54.2}
{"catalyst":"C","concent":55.4}
{"catalyst":"D","concent":52.9}
{"catalyst":"D","concent":49.9}
{"catalyst":"D","concent":50}
{"catalyst":"D","concent":51.7}