# Timelion - metric=median query?

**URL:** <https://discuss.elastic.co/t/timelion-metric-median-query/240727>\
**Category:** Kibana\
**Tags:** timelion\
**Created:** [July 10, 2020, 4:39pm UTC](https://discuss.elastic.co/t/timelion-metric-median-query/240727 "2020-07-10T16:39:30Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![isarib](https://avatars.discourse-cdn.com/v4/letter/i/b9e5f3/32.png) [@isarib](https://discuss.elastic.co/u/isarib)\
**Post date:** [July 10, 2020, 4:39pm UTC](https://discuss.elastic.co/t/timelion-metric-median-query/240727/1 "2020-07-10T16:39:30Z")

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I am using timelion to do sum and averages, but is there an internal metric function to determine median?

example:  
.es(offset=-24h,index=system\_stats\*,interval=5m, timefield='@timestamp', metric=avg:downnodes, q=island\_type:cpu)  
.divide(.es(offset=-24h,index=system\_stats\*,interval=5m,timefield='@timestamp', metric=avg:capacity, q=island\_type:cpu))  
.multiply(100)

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**Author:** ![nickpeihl](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/nickpeihl/32/112622_2.png) [@nickpeihl](https://discuss.elastic.co/u/nickpeihl)\
**Post date:** [July 14, 2020, 6:51pm UTC](https://discuss.elastic.co/t/timelion-metric-median-query/240727/2 "2020-07-14T18:51:41Z")

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Hi Imran. I think you could use the percentiles aggregation can find the median (50th percentile).

For example I created this expression to return only the 50th percentile for a packetbeat field.  
`.es(index=packetbeat-*,metric=percentiles:http.response.body.bytes:50)`

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<div class="post-metadata">

**Author:** ![isarib](https://avatars.discourse-cdn.com/v4/letter/i/b9e5f3/32.png) [@isarib](https://discuss.elastic.co/u/isarib)\
**Post date:** [July 15, 2020, 4:05am UTC](https://discuss.elastic.co/t/timelion-metric-median-query/240727/3 "2020-07-15T04:05:05Z")

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Thank you, this is exactly what I'm after and it works.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 12, 2020, 4:12am UTC](https://discuss.elastic.co/t/timelion-metric-median-query/240727/4 "2020-08-12T04:12:36Z")

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