99/95 F 94/90 F 89/85 F 79/75 F 74/70 F 69/65 F 64/60 F 59/55 F 54/50 F84/80 F Percentage Of Chiller Capacity By Weather Bin Lead chiller Lag chiller Average single-chiller profile, ARI 550/590-1998: IPLV = 0.01A+ 0.42B + 0.45C + 0.12D Actual chiller 0.19A