For 2018 rereco (Autumn 18) the SF are the following, 0.969 +/- 0.000 (stat) (EB), and 0.984 +/- 0.001 (stat) (EE). The systematic uncertainty is same as 2017 prompt, as indicated in slide 15 of Z'->EE approval presentation, linked above. So, the following should be used
uncertainty: EB ET < 90 GeV: 1% else min(1+(ET-90)0.0022)%,3%)
uncertainty: EE ET < 90 GeV: 2% else min(1+(ET-90)0.0143)%,5%)
https://twiki.cern.ch/twiki/bin/view/CMS/EgammaRunIIRecommendations#Electron_Scale_Factors
For 2018 rereco (Autumn 18) the SF are the following, 0.969 +/- 0.000 (stat) (EB), and 0.984 +/- 0.001 (stat) (EE). The systematic uncertainty is same as 2017 prompt, as indicated in slide 15 of Z'->EE approval presentation, linked above. So, the following should be used uncertainty: EB ET < 90 GeV: 1% else min(1+(ET-90)0.0022)%,3%) uncertainty: EE ET < 90 GeV: 2% else min(1+(ET-90)0.0143)%,5%)