32 



GRAPHICAL COMPARISON OF METER RATES 



CALCULATION FOR PLOTTING METER RATES AT MADISON, WIS. 



On Fig. 2 these figures are plotted. The average annual bills 

 are shown by other lines. In reproducing the meter rate sheet 

 on a smaller scale many of the lines on the original are omitted. 



Similar diagrams for the other meter rates that are given 

 as examples are shown in connection with those rates at the 

 end of this chapter. 



Another Method of Handling Service Charges. First com- 

 pute the rate for all quantities as if there were no service charges 

 and plot it as a thin line on the diagram, calling it the base rate 

 line. Then find or estimate and add at the various points the 



