# Comparison of data between local towns
**URL:** https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690
**Category:** Scientific Discourse
**Created:** [March 21, 2024, 7:21am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690 "2024-03-21T07:21:14Z")
**Posts on this page:** 15
**Page:** 1
### Author:  [@sensorsalnorth12](https://forum.sensor.community/u/sensorsalnorth12)
#### Post date: [March 21, 2024, 7:21am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/1 "2024-03-21T07:21:14Z")
I was wondering if anyone has looked into how their sensor data compares with other sensors in their area. I have been looking at the PM 2.5 profiles from sensors placed around 30 miles apart and they look quite similar. I can think of only two reasons why this would be the case
1. Local sources play little part in the PM 2.5 concentration
2. Weather dominates the profile.
Has anyone else investigated this?
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### Author:  [@v6tunnler](https://forum.sensor.community/u/v6tunnler)
#### Post date: [March 21, 2024, 6:15pm UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/2 "2024-03-21T18:15:38Z")
> [@sensorsalnorth12](#):
>
> I have been looking at the PM 2.5 profiles from sensors placed around 30 miles apart and they look quite similar.
There are not much sensors around here (north italy), but i see some corelation with goverment measurements and there is a difference between rural areas and city’s.
> [@sensorsalnorth12](#):
>
> Local sources play little part in the PM 2.5 concentration
I think it may depends on the location, if there is a lot of industry or if people are heating with wood then the PM 2.5 will likely be higher.
I also observed peeks in PM 2.5 in the winter when citizens started heating with with wood.
As far i know, only humidity is influencing the Nova PM sensor measurements.
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### Author:  [@sensorsalnorth12](https://forum.sensor.community/u/sensorsalnorth12)
#### Post date: [March 22, 2024, 11:55am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/3 "2024-03-22T11:55:30Z")
Further to this below is a plot of the data over seven days in February.
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### Author:  [@Herve5](https://forum.sensor.community/u/Herve5)
#### Post date: [March 28, 2024, 4:47pm UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/4 "2024-03-28T16:47:47Z")
For having used various sensors in two different towns during a couple of years, I can say that the _altitude_ of your measurements has quite a strong influence.
Here in Paris the difference between ground level and 4th floor is more than twofold for instance, for PM2.5 and PM10 measurements…
I encourage filling the ‘altitude’ field as accurately as possible when setting the sensor to publish 😉
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### Author:  [@sensorsalnorth12](https://forum.sensor.community/u/sensorsalnorth12)
#### Post date: [March 28, 2024, 5:24pm UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/5 "2024-03-28T17:24:19Z")
Both sensors are close to breathable height i.e approximately the same height above the ground.
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### Author:  [@sensorsalnorth12](https://forum.sensor.community/u/sensorsalnorth12)
#### Post date: [March 28, 2024, 5:35pm UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/6 "2024-03-28T17:35:50Z")
I should add that I was expecting to see a larger difference in the profiles as they are 30 miles apart.
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### Author:  [@sensorsalnorth12](https://forum.sensor.community/u/sensorsalnorth12)
#### Post date: [July 28, 2024, 7:38am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/8 "2024-07-28T07:38:47Z")
😉many thanks. I have indeed checked the altitude of both locations and they are different. My point is the data is not as significantly different as I was anticipating and appears to be at odds with what you find.
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### Author:  [@sensorsalnorth12](https://forum.sensor.community/u/sensorsalnorth12)
#### Post date: [July 28, 2024, 7:39am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/9 "2024-07-28T07:39:18Z")
Why is your link a shop?
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### Author:  [@Herve5](https://forum.sensor.community/u/Herve5)
#### Post date: [July 28, 2024, 8:21am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/10 "2024-07-28T08:21:31Z")
HIS link (from @jakasspeech3 ) is a shop, because he is a spammer.
He posts in the forum for the fist time, writes a standard sentence that can relate to anything (_'thanks for sharing_…') and adds HIS advertisment within my text, so (like me) you click on it…
This was called ‘spam comment’ years ago alredy, at the time of ascii forums…
Worst of all, I don’t know how to declare it as such, the only ‘person’ we can address this seems to be Mr. @discobot , of which reaction I’m a bit skeptical…
I just hope he didn’t do this in 100 other threads…
H.
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### Author:  [@discobot](https://forum.sensor.community/u/discobot)
#### Post date: [July 28, 2024, 8:21am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/11 "2024-07-28T08:21:33Z")
Hi! To find out what I can do, say `@discobot display help`.
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### Author:  [@Herve5](https://forum.sensor.community/u/Herve5)
#### Post date: [July 28, 2024, 8:24am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/12 "2024-07-28T08:24:15Z")
@discobot display help
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### Author:  [@discobot](https://forum.sensor.community/u/discobot)
#### Post date: [July 28, 2024, 8:24am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/13 "2024-07-28T08:24:17Z")
I currently know how to do the following things:
`@discobot start {name-of-tutorial}`
> Starts an interactive tutorial just for you, in a personal message. `{name-of-tutorial}` can be one of: `tutorial, advanced tutorial`.
`@discobot roll 2d6`
> 🎲 3, 6
`@discobot quote`
> 🗨 _Try not to become a man of success but rather try to become a man of value._ — Albert Einstein
`@discobot fortune`
> 🔮 You may rely on it
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### Author:  [@miaalexandra](https://forum.sensor.community/u/miaalexandra)
#### Post date: [February 19, 2025, 12:03pm UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/14 "2025-02-19T12:03:32Z")
We evaluated whether using county-level data to characterize public health measures in cities biases the characteri zation of city populations.this new method, called the Degree [Spacebar clicker](https://spacebar-clicker.org/) of Urbanisation, classifies the entire territory of a country into three classes We’ve recently acquired an extensive dataset _from_ OpenStreetMap, packed with information about _cities_, _towns_, villages, and hamlets _from_ all around the globe.
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### Author:  [@susankeaton](https://forum.sensor.community/u/susankeaton)
#### Post date: [February 26, 2025, 11:06am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/15 "2025-02-26T11:06:44Z")
I was wondering if anyone has looked into how their sensor data compares with other sensors in their area. [human benchmark](https://human-benchmark.org/) I have been looking at the The OECD Local Data Portal lets you visualise and compare municipal and local data across 41 countries. … Comparing cities across countries requires …
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### Author:  [@sensorsalnorth12](https://forum.sensor.community/u/sensorsalnorth12)
#### Post date: [February 26, 2025, 11:50am UTC](https://forum.sensor.community/t/comparison-of-data-between-local-towns/2690/16 "2025-02-26T11:50:59Z")
Yes we are looking into this. At the moment it is early days but I am finding some interesting things.