jefffalk 0 research notes and 0 wiki edits | Joined almost 5 years ago

retired statistician; did an analysis of data from a citizen's monitoring network around a frac sand facility in western wisconsin





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"Thanks for making the effort to explain and for doing the experiment. Yes, there is an interval of high correlation. " | Read more » over 4 years ago
"Please explain what is meant by: "During the period when I am sleeping peacefully in my tent (after ~25 mins), the RH and CO2 readings seem to fluc..." | Read more » over 4 years ago
"Another well financed monitoring report that includes mobile monitoring is by David Snyder from UW Stevens Point: LADCO Midwest Wood Smoke Study: h..." | Read more » over 4 years ago
"There are apparently some misconceptions here. As I read it, the monitor used by Apte was a commercial DustTrak not a dustduino and his research h..." | Read more » over 4 years ago
"Having an inexpensive mobile monitor would be wonderful. In fact, having an inexpensive stationary monitor would be wonderful. But one needs credi..." | Read more » over 4 years ago
"Thanks for the info on the DUSTTRAK. It's good to remember everything comes with advantages and disadvantages. Adjusting for or eliminating humidit..." | Read more » almost 5 years ago
"After reviewing these posts it became apparent that there are two questions here. One is about "eliminating" humidity, possibly by mechanical means..." | Read more » almost 5 years ago
"Hank Boschen's Dylos monitoring system in Chippewa Falls records readings from a Dylos every 10 minutes and posts to a website. It also includes we..." | Read more » almost 5 years ago
"Let's try again. Gravimetric monitors capture particles and allow a weight of those captured to be determined. The distribution of aerodynamic diam..." | Read more » almost 5 years ago
"As I understand it PM2.5 implies an aerodynamic diameter of 2.5 microns, straight forward with no "mean" involved. The "mean" enters with the epa ..." | Read more » almost 5 years ago
"The graph is wonderful and would be very informative if one could be confident of the story it tells. In all cases of use of particle counters one ..." | Read more » almost 5 years ago
"I may not be understanding this method fully but keep in mind that PM2.5 indicates particulate of aerodynamic diameter less than or equal to 2.5µm...." | Read more » almost 5 years ago

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