Comments

Author Comment Last activity Moderation
jeffalk "Hi @stevie, @Aleah, @Cbarnes9, and @crispinpierce, I may be jumping the gun here but since .csv files are openable by EXCEL and can be copied and ..." | Read more » 7 months ago
jeffalk "Hello @liz; That might help if the someone, like me, had sense enough to look at the buttons down at the bottom (as I did not!). Here I'll try a..." | Read more » 8 months ago
jeffalk "Hi @liz, I just lost my lengthy comment. I clicked on the "preview" button below and then wanted to change some things and couldn't get back and..." | Read more » 8 months ago
jeffalk "Hi @stevie, @Aleah, @Cbarnes9, and @crispinpierce, stevie's list is excellent, but perhaps more detailed than is necessary. Please correct me if I..." | Read more » 8 months ago
jeffalk "Hi @Warren, For suggestions on where to go it might be helpful if you were to explain more fully by an example the question: "once something is w..." | Read more » 9 months ago
jeffalk " Hi @samr. All the comments above are good and hopefully helpful and your questions are astute. I'm curious as to what led you to "air quality" a..." | Read more » about 1 year ago
jeffalk " @Tomp, I'm not sure I understand your question but "particle counters" are basically counting particles and converting the counts to densities. T..." | Read more » about 1 year ago
jeffalk " Thanks @cfastie for your comment. Some of it however is not clear to me so I'd appreciate some clarification. You write: "To be reminded that the..." | Read more » about 1 year ago
jeffalk " Hi @OrionAllgaier, It's great to be curious and I'm sorry I can't answer your questions. But I am also curious. To my mind if one is trying to pr..." | Read more » about 1 year ago
jeffalk " Hi @kahlilkochiyama and @shannonkmcalpine, I just searched for air quality in Gardena, Ca, and found an article in the Daily Breeze, https://www.d..." | Read more » about 1 year ago
jeffalk " @warren, what is "helpful", as you know, depends on the intended use. Data from unknown and unsubstantiated sources can be unreliable depending ..." | Read more » about 1 year ago
jeffalk "Hi @kahlilkochiyama and @shannonkmcalpine Some suggestions for beginning questions for air monitoring in the Los Angeles area: There are many go..." | Read more » about 1 year ago
jeffalk "@cfastie is certainly correct in his comments that each of the purple air devices reads, in general, higher than the Grimm. (Almost all slopes (coe..." | Read more » over 1 year ago
jeffalk "I just reviewed this conversation and would like to add to it and would like comments from @sagarpreet and @guolivar if possible. About the USEPA ..." | Read more » over 1 year ago
jeffalk "I'd appreciate learning what in the document you referenced indicates to you that the PM10 is "biased rather high". Thanks " | Read more » over 1 year ago
jeffalk "Hi. Given that you mention "silica" and you are at UW Eau Claire ( western wisconsin sand mining...) I take your question to really ask whether on..." | Read more » over 1 year ago
jeffalk "I could be wrong but I do not believe optical particle counters use spectroscopy as the method is usually described. At any rate a number of years..." | Read more » over 1 year ago
jeffalk "I will most likely not be able to participate. I have been concerned and involved with frac sand air quality issues for years. Regarding the topic ..." | Read more » over 1 year ago
jeffalk "I'll try placing the graph again. I'm sometimes clutzy at this stuff! I'm trying to use jpg format. " | Read more » over 1 year ago
jeffalk "I tried to drag an image, tried copying and pasting, tried putting the image into a WORD document and dragging or pasting, you see the results above. " | Read more » over 1 year ago
jeffalk "Nice "sanity check" for pm "real time" monitors. I'd suggest it is always good practice when testing to make use of original data, in the case of..." | Read more » over 1 year ago
jeffalk "jiteovien: I realize you have put a considerable amount of effort into your project and are trying to do an excellent job. I believe you are exhib..." | Read more » over 1 year ago
jeffalk "I believe you are not quite correct in the determination of the AQI. First, the downloaded data from purple air gives concentrations, for pm2.5 th..." | Read more » over 1 year ago
jeffalk "If no one has volunteered to help them out, I'd be glad to try. Send me an email for a contact person. Or send them my email: joanjeff@centurylin..." | Read more » over 1 year ago