---
title: oee.APQ() function
description: >
  `oee.APQ()` computes availability, performance, quality (APQ) and overall equipment
  effectiveness (OEE) in producing parts.
menu:
  flux_v0_ref:
    name: oee.APQ
    parent: experimental/oee
    identifier: experimental/oee/APQ
weight: 201
---

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`oee.APQ()` computes availability, performance, quality (APQ) and overall equipment
effectiveness (OEE) in producing parts.

Provide the required input schema to ensure this function successfully calculates APQ and OEE.

### Required input schema
Input tables must include the following columns:

- **_stop**: Right time boundary timestamp (typically assigned by `range()` or `window()`).
- **_time**: Timestamp of the production event.
- **state**: String that represents start or stop events or the production state.
- **partCount**: Cumulative total of parts produced.
- **badCount**: Cumulative total of parts that do not meet quality standards.

### Output schema
For each input table, `oee.APQ` outputs a table with a single row that includes the following columns:

- **_time**: Timestamp associated with the APQ calculation.
- **availability**: Ratio of time production was in a running state.
- **oee**: Overall equipment effectiveness.
- **performance**: Ratio of production efficiency.
- **quality**: Ratio of production quality.
- **runTime**: Total nanoseconds spent in the running state.

##### Function type signature

```js
(
    <-tables: stream[D],
    idealCycleTime: A,
    plannedTime: B,
    runningState: C,
) => stream[{
    E with
    runTime: G,
    quality: float,
    performance: float,
    oee: float,
    availability: float,
    _time: F,
    _stop: F,
}] where C: Equatable, D: Record
```

{{% caption %}}
For more information, see [Function type signatures](/flux/v0/function-type-signatures/).
{{% /caption %}}

## Parameters

### runningState
({{< req >}})
State value that represents a running state.



### plannedTime
({{< req >}})
Total time that equipment is expected to produce parts.



### idealCycleTime
({{< req >}})
Ideal minimum time to produce one part.



### tables

Input data. Default is piped-forward data (`<-`).