The council document said following more detailed investigations a "variation" - or difference between the agreed price list, called the the "schedule of rates" - and the actual amount charged by MITIE was found.

BBC: Birmingham Council House

This optional monthly payment program, called Fidelity Smart Payment Program, uses quantitative analysis to determine a schedule of annual target payment rates, with a goal of not running out of money before the target date is achieved.

FORBES: Nest Egg Tapping

Past research has indicated that circadian clocks govern physiological rhythms in many parts of the body and that the different parts can adjust to schedule changes at different rates.

ECONOMIST: Biology: Go west, old man | The