Comparing values of both inputs cell by cell False indicates difference in values. True indicates same value. The below gives the count of False and True for each cell. LWin,False,133.0 LWin,True,1356.0 LWout,False,114.0 LWout,True,1375.0 MWS,False,6.0 MWS,True,1483.0 PPFD,False,97.0 PPFD,True,1392.0 PPFDr,False,12.0 PPFDr,True,1477.0 P_rain,False,1467.0 P_rain,True,22.0 RH,False,95.0 RH,True,1394.0 Rn,False,46.0 Rn,True,1443.0 Rr,True,1489.0 SHF_1_1_1,False,10.0 SHF_1_1_1,True,1479.0 SWC_1_1_1,False,1488.0 SWC_1_1_1,True,1.0 SWC_1_2_1,False,1488.0 SWC_1_2_1,True,1.0 SWC_1_3_1,False,1488.0 SWC_1_3_1,True,1.0 SWC_1_4_1,False,1488.0 SWC_1_4_1,True,1.0 SWC_1_5_1,False,1488.0 SWC_1_5_1,True,1.0 SWC_2_1_1,True,1489.0 SWC_2_2_1,False,1488.0 SWC_2_2_1,True,1.0 SWC_2_3_1,False,1465.0 SWC_2_3_1,True,24.0 SWC_2_4_1,False,1488.0 SWC_2_4_1,True,1.0 SWC_2_5_1,False,1488.0 SWC_2_5_1,True,1.0 SWin,False,35.0 SWin,True,1454.0 SWout,False,10.0 SWout,True,1479.0 TIMESTAMP,False,1489.0 Ta_1_1_1,False,1485.0 Ta_1_1_1,True,4.0 Ta_1_1_2,False,1485.0 Ta_1_1_2,True,4.0 Tc,False,168.0 Tc,True,1321.0 Ts_1_1_1,False,1488.0 Ts_1_1_1,True,1.0 Ts_1_2_1,False,1486.0 Ts_1_2_1,True,3.0 Ts_1_3_1,False,1488.0 Ts_1_3_1,True,1.0 Ts_1_4_1,False,1488.0 Ts_1_4_1,True,1.0 Ts_1_5_1,False,1488.0 Ts_1_5_1,True,1.0 Ts_2_1_1,False,710.0 Ts_2_1_1,True,779.0 Ts_2_2_1,False,1488.0 Ts_2_2_1,True,1.0 Ts_2_3_1,False,1488.0 Ts_2_3_1,True,1.0 Ts_2_4_1,False,1486.0 Ts_2_4_1,True,3.0 Ts_2_5_1,False,1488.0 Ts_2_5_1,True,1.0 WD,False,142.0 WD,True,1347.0