See how a running total differs from a rate of change with parcels delivered as...

https://wiki-velo.win/index.php/What_Units_Do_I_Get_When_I_Integrate_a_Rate_Like_mm_per_Hour%3F

See how a running total differs from a rate of change with parcels delivered as an example. Track the total across a shift, then compare parcels per hour. The article shows how units and time windows help you read a chart and spot what’s changing.