# Map suggestion: playback

**URL:** <https://forum.sensor.community/t/map-suggestion-playback/548>\
**Category:** Uncategorized\
**Created:** [April 26, 2021, 12:43pm UTC](https://forum.sensor.community/t/map-suggestion-playback/548 "2021-04-26T12:43:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sensorsalnorth12](https://forum.sensor.community/user_avatar/forum.sensor.community/sensorsalnorth12/32/120_2.png) [@sensorsalnorth12](https://forum.sensor.community/u/sensorsalnorth12)\
**Post date:** [April 26, 2021, 12:43pm UTC](https://forum.sensor.community/t/map-suggestion-playback/548/1 "2021-04-26T12:43:17Z")

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I would find it useful to be able to see past (historic) community map information as I could see which sensors gave high particle counts at the same time as my sensors. Is this something that could be done?

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**Author:** ![ricki-z](https://forum.sensor.community/user_avatar/forum.sensor.community/ricki-z/32/215_2.png) [@ricki-z](https://forum.sensor.community/u/ricki-z)\
**Post date:** [April 26, 2021, 9:15pm UTC](https://forum.sensor.community/t/map-suggestion-playback/548/2 "2021-04-26T21:15:11Z")

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Hello,  
it’s a matter of available memory. The JSON files for PM data and temperature/humidy/pressure are 6MB each (at the moment). And around 14000 data points (incl. location and sensor infos) that your browser needs to handle.  
Someone has tried it but after 4 years of data the data volume was too much: [Alternative LuftDaten viewer](http://sourisr.kapsi.fi/luftdaten/luftdate_vis/)