Running totals show what’s added up, while rates show how fast it changes. With...

https://www.mediafire.com/file/wgtscej188dt036/pdf-11118-32695.pdf/file

Running totals show what’s added up, while rates show how fast it changes. With parcels and rainfall, see why units matter: parcels per hour differs from a parcel count, and millimeters per day from a weekly total