Using Hem’s scaler reports from the Fall ‘18 lumi scan, I get boiling slopes for C, LH2, and LD2 with total errors of ~+-0.3% . Results are consistent between the 2 pre-triggers El LO-CER and EL HI, and the 2 triggers El Real and El Clean. Additional scalers like PR LO, PR HI, and SH LO appeared to work quite well at the higher rates for LH2 and LD2, but I dropped them because for carbon – where the rates were relatively low – the slopes were too sensitive to the beam off offsets.