1 2 3 4 5 6 7 8 9 10 11 12 13 14 15"ts","dur","part","a","b" 16100,400,0,111,"[NULL]" 17500,50,0,222,"[NULL]" 18600,100,0,333,"[NULL]" 19900,100,0,444,"[NULL]" 20100,150,1,111,444 21250,50,1,111,"[NULL]" 22300,100,1,111,555 23400,100,1,111,666 24500,50,1,222,666 25600,50,1,333,666 26650,50,1,333,"[NULL]" 27900,100,1,444,"[NULL]" 28100,400,2,111,777 29500,50,2,222,777 30600,100,2,333,777 31900,100,2,444,777 32100,400,4,111,"[NULL]" 33500,50,4,222,999 34600,100,4,333,"[NULL]" 35900,100,4,444,"[NULL]" 36100,25,5,111,1111 37125,375,5,111,"[NULL]" 38500,25,5,222,"[NULL]" 39525,25,5,222,2222 40600,100,5,333,"[NULL]" 41900,100,5,444,"[NULL]" 42100,400,6,111,"[NULL]" 43500,50,6,222,"[NULL]" 44600,100,6,333,"[NULL]" 45900,100,6,444,"[NULL]" 46