I want to know which one is the target variable for my data set

Result History Exampleset (Read CSV) Open in Turbo Prep Il Auto Mode Filter (5,819,079 / 5,919.079 examples: all Data Row No. YEAR MONTH DAY DAY OF W.. AIRLINE FLIGHT_NU... TAIL_NUMB... ORIGIN AIR... DESTINATI.. SCHEDULE... DEPARTUR DEPARTUR.. TAXI OUT WHEELS OFF SCI 205 1 2015 1 1 4 AS 98 ANC SEA 5 2354 -11 21 15 N407A5 NAKLAA 2015 1 1 4 BA 2336 LAX PRI 10 2 8 12 14 Statistics 3 2015 1 1 41 US 840 N17105 sro CLT 20 18 -2 16 34 28 4 2015 1 1 1 4 258 N3HYAA TAX MIA 15 15 30 289 5 2015 1 1 4 AS 135 NS27AS SEA ANC 25 24 - 1 11 25 235 6 2015 1 Visualizations 1 4 DL 806 N37300 SFO MSP 25 20 18 38 21 7 1 1 4 NK 612 NEYNK LAS 25 14 6 20 2015 2015 18 273 1 1 1 4 US 2013 NS 8401 CLT 30 14 11 13 57 2015 1 1 4 4 AA 1112 N3LAAA SFO DE 30 19 -11 17 36 195 Annotations 10 2015 1 1 4 DL 1173 N82EDN LAS ATL 30 33 3 12 45 22 11 2015 1 1 4 DL 2336 N95&DN DEN ATL 30 24 -6 12 36 17 12 2015 1 1 4 1674 N8544 TAS MIA 35 27 -& 21 48 268 13 2015 1 1 4 DL 1434 NS 47US LAX MSP 35 35 18 53 21- 14 2015 1 1 4 DL 2324 N3751B SLC ATL 40 34 -6 18 52 215 15 2015 1 1 1 4 DL 2440 NE5100 SEA MSP 4.1 31 -1 28 184 16 2015 1 1 1 1 1 AS 108 N309AS ANC SCA 15 11 -4 17 58 20 17 2015 1 1 4 DL 1560 N3743H ANC SEA 45 31 -14 25 56 210 18 2015 1 1 4 UA 1197 N78448 SED LAH 48 42 11 53 212 19 2015 1 1 1 AS 122 N413AS ANC PDX 50 46 -4 11 57 215 20 2015 1 1 4 DI 1670 N8D50N N POX MSP 50 45 - 5 54 19 21 2015 1 1 4 NK 520 NS2SNK LAS MCI 55 120 25 11 131 162 22 2015 1 1 4 AA 371 N3 GXAA SEA MIA 100 52 30 122 23 2015 1 1 4 NK 214 N632NK LAS DFW 1013 1072 -1 115 14. 282 21 2015 1 1 1 MA 115 NICTAA AX MU 105 103 -2 11 117 25 2015 1 1 1 4 DL 1450 N671 DN LAS MSP 105 102 -3 11 113 18 26 2015 1 1 1 1 4 UA 1545 N76517 LAX 115 112 3 11 123 18 27 2015 1 1 45 130 N457A5 FA SEA 115 107 25 132 21