1 2 3 4 5 6"ts","dur","part","a","b" 750,50,1,"[NULL]",14 8100,50,1,10,14 9150,350,1,10,"[NULL]" 10500,50,1,11,"[NULL]" 11550,50,1,11,15 12600,50,1,"[NULL]",16 13900,500,1,"[NULL]",17 1450,100,2,"[NULL]",14 15500,50,2,12,"[NULL]" 16550,50,2,"[NULL]",15 17600,50,2,"[NULL]",16 18900,500,2,"[NULL]",17 1950,100,3,"[NULL]",14 20550,50,3,"[NULL]",15 21600,50,3,13,16 22650,50,3,13,"[NULL]" 23900,500,3,"[NULL]",17 24