| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mathew | "@Matej the most up-to-date information and production files are in the Github repository: https://github.com/publiclab/passive-pm The screen and m..." | Read more » | about 6 years ago | |||
| mathew | "@eustatic-- you definitely didn't kill momentum on the project! Once we had the calibration locked in, we needed something to test for. The Kitag..." | Read more » | over 6 years ago | |||
| mathew | "You're right I had a typo-- I should have deleted the PM2.5 field. fixed, thanks. The mine was operational, and they were not loading rail cars, b..." | Read more » | almost 7 years ago | |||
| mathew | "Absolutely, I should have mentioned them. Here are two: $26 Ambient Weather WM-35 (discontinued, new model is WM-2), has no recording functions ..." | Read more » | almost 7 years ago | |||
| mathew | "@bkeist do you want to try troubleshooting it live? could you join next Tuesday's open call? its from 2-3 Central time. " | Read more » | about 7 years ago | |||
| mathew | "@warren @rjstatic would know more about the modification, but the Open Pipe Kit installation you have should be modifiable to send an e-mail notifi..." | Read more » | about 7 years ago | |||
| mathew | "I've been in touch with Airmetrics over the issue. they're been very helpful and responsive. (see below) " | Read more » | about 7 years ago | |||
| mathew | "Airmetrics got to scratching their heads over this difference as well! It turns out there is an additional variable that isn't listed in the manua..." | Read more » | about 7 years ago | |||
| mathew | "I contacted some folks at Airmetrics, and their initial reaction was that I appeared to be doing it correctly (but they didn't really dig in). The ..." | Read more » | about 7 years ago | |||
| mathew | "@gretchengehrke 1) yes, P and T are pressure and temp. There's Pstd and Pact (P standard and P actual) same for temperature. Those are the tempera..." | Read more » | about 7 years ago | |||
| mathew | "I know nothing about these models, but thought I'd add some links for reference AEROMOD: https://www3.epa.gov/scram001/dispersion_prefrec.htm#aerm..." | Read more » | over 7 years ago | |||
| mathew | "oh yes! please read our wiki on frac sand and PM, its getting pretty fleshed out: https://publiclab.org/wiki/frac-sand follow notes as they happen..." | Read more » | about 8 years ago | |||
| mathew | "cool opportunity, @Philrosenberg! you may want to share it out with the Public Lab Air Quality list: http://publiclab.org/lists @Marlokeno: The q..." | Read more » | about 8 years ago | |||
| mathew | "@marlokeno material and charge probably matter quite a bit. There are several research projects using the charge of certain particles for detectio..." | Read more » | about 8 years ago | |||
| mathew | "Thanks for sharing that, Nicholas. I've started keeping a list of sensor evaluations on the wiki page for optical pm monitors: https://publiclab.o..." | Read more » | about 8 years ago | |||
| mathew | "the authors did two levels of survey-- first the 6 minute 'snapshots' and then they used that to determine where to place passive monitors for long..." | Read more » | about 8 years ago | |||
| mathew | "hah! school networks are always a problem. I posted a note recently on hotspot identification, the first stage of which involved a systematic surv..." | Read more » | about 8 years ago | |||
| mathew | "I'm revisiting your note, just want to say again how cool this is! great to see you're still up and posting data. " | Read more » | about 8 years ago | |||
| mathew | "Also see @Damarquis's note on using MaxEntropy https://publiclab.org/notes/Damarquis/10-20-2015/using-imagej-to-analyze-threshold-and-saving-result..." | Read more » | about 8 years ago | |||
| mathew | "@donblair what battery is the coin cell battery? " | Read more » | about 8 years ago | |||
| mathew | "Great writeup, Luke! cool work. " | Read more » | about 8 years ago | |||
| mathew | "I want to note that while Open Pipe Kit development continues, running this comparison has been a low priority since AQICN is running effectively t..." | Read more » | about 8 years ago | |||
| mathew | "I'm writing up an introduction to particles in the air right now (rough draft), and one of the questions I wanted to answer was about naked eye obs..." | Read more » | about 8 years ago | |||
| mathew | "awesome resources and case! hadn't seen this summary of low cost PM sensors: http://www.aqmd.gov/aq-spec/evaluations#&MainContent_C001_Col00=2 " | Read more » | over 8 years ago |