Process position
Add a reading
One measurement per row, in the order they were takenFilters
Applied to every screen, the report and the CSVIndividual measurements
No readings recorded yet. Add one on the left, or load the sample data from the Settings tab.
Headline figures
Individuals chart
Every reading in the order it was takenMoving range chart
The difference between each reading and the one before itWhere the readings fall
Distance from the centre line, in sigmaAverage and spread by machine
Where the readings came fromHow the limits were arrived at
Every constant and every step, so the arithmetic can be checked by handReadings needing an explanation
Anything breaking a rule, out of specification, or excludedSettings
Currency, dates and the rules this tool appliesReport header
Appears on the printed reportYour data
Stays on this computerRecords and settings are stored in this browser only. Use Export .json for a backup you can archive or move to another machine, and Import .json to restore it. Reset asks twice, then erases everything.