# Probe volume values

**URL:** https://discourse.slicer.org/t/probe-volume-values/8168
**Category:** Support
**Created:** [August 25, 2019, 12:20pm UTC](https://discourse.slicer.org/t/probe-volume-values/8168 "2019-08-25T12:20:31Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![MFS-YES](https://avatars.discourse-cdn.com/v4/letter/m/bbe5ce/32.png) [@MFS-YES](https://discourse.slicer.org/u/MFS-YES)
#### Post date: [August 25, 2019, 12:20pm UTC](https://discourse.slicer.org/t/probe-volume-values/8168/1 "2019-08-25T12:20:31Z")

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Hello!  
can someone explain the meaning of different values (L, P, S, Sp) on the probe model? thanks!

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/3/033f214074a9cb02d3414e323e3e173be05d0084.jpeg)

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### Author: ![JanWitowski](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/janwitowski/32/4512_2.png) [@JanWitowski](https://discourse.slicer.org/u/JanWitowski)
#### Post date: [August 25, 2019, 1:15pm UTC](https://discourse.slicer.org/t/probe-volume-values/8168/2 "2019-08-25T13:15:24Z")

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As [described in documentation](https://www.slicer.org/wiki/Documentation/4.10/Modules/DataProbe), information highlighted by you are: in the first line patient-space location (R/A/S; Right/Anterior/Superior), spacing between slices for slice view; in the final line value of the volume at current location (usually a Hounsfield Unit value).