1 2 3 4 5 6 7 8 9 10 11 12 13 14"ts","dur","part","a","b" 15100,150,1,111,444 16250,50,1,111,"[NULL]" 17300,100,1,111,555 18400,100,1,111,666 19500,50,1,222,666 20600,50,1,333,666 21650,50,1,333,"[NULL]" 22500,100,3,444,"[NULL]" 23100,100,4,555,"[NULL]" 24200,50,4,666,999 25250,50,4,777,"[NULL]" 26100,25,5,888,"[NULL]" 27125,50,5,888,1111 28175,15,5,888,"[NULL]" 29190,10,5,888,2222 30