> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/boomerang-3-calibration-app-manual/advanced/calculation-method/reference-readings-handling.md).

# Reference readings handling

The WLREF reference readings are adjusted basing on the data stored in [WLREF adjustment file](/boomerang-3-calibration-app-manual/calibration-app/wlref-adjustment-file.md).

Basing on the data stored in the adjustment file, an adjustment is defined for every refererence reading. The app selects the adjustment for the calibration temperature which is the closest to the reference raw reading. 

The raw reference reading is then adjusted and rounded to 2 digits after decimal point.

Example

WLREF adjustments file

```
ceb3451dfbc9
246/2/25
-80,005	0,023	0,030
-55,003	0,011	0,030
-40,000	0,014	0,030
-20,003	0,020	0,030
-0,002	0,018	0,030
4,999	-0,006	0,030
9,999	-0,004	0,030
20,000	0,006	0,030
30,005	0,017	0,030
37,004	0,012	0,030
49,998	-0,003	0,030
105,005	0,013	0,030
```

The reference readings, their adjustments, adjusted values and adjusted rounded values. Reading 1 and 2 have adjustment values taken from 20°C row, all the other from 105°C row.

<table><thead><tr><th width="231" valign="bottom">Reference series readings</th><th width="117" valign="bottom">Raw</th><th width="109">Adjustment</th><th width="103">Adjusted</th><th width="143">Adjusted rounded</th></tr></thead><tbody><tr><td valign="bottom">Reading 1</td><td valign="bottom">24.414</td><td>0.006</td><td>24.408</td><td>24.41</td></tr><tr><td valign="bottom">Reading 2</td><td valign="bottom">24.273</td><td>0.006</td><td>24.267</td><td>24.27</td></tr><tr><td valign="bottom">Reading 3</td><td valign="bottom">89.218</td><td>0.013</td><td>89.205</td><td>89.21</td></tr><tr><td valign="bottom">Reading 4</td><td valign="bottom">87.000</td><td>0.013</td><td>86.987</td><td>86.99</td></tr><tr><td valign="bottom">Reading 5</td><td valign="bottom">85.500</td><td>0.013</td><td>85.487</td><td>85.49</td></tr><tr><td valign="bottom">Reading 6</td><td valign="bottom">84.187</td><td>0.013</td><td>84.174</td><td>84.17</td></tr><tr><td valign="bottom">Reading 7</td><td valign="bottom">83.109</td><td>0.013</td><td>83.096</td><td>83.10</td></tr><tr><td valign="bottom">Reading 8</td><td valign="bottom">82.093</td><td>0.013</td><td>82.080</td><td>82.08</td></tr><tr><td valign="bottom">Reading 9</td><td valign="bottom">81.132</td><td>0.013</td><td>81.119</td><td>81.12</td></tr><tr><td valign="bottom">Reading 10</td><td valign="bottom">80.242</td><td>0.013</td><td>80.229</td><td>80.23</td></tr></tbody></table>


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