Dust results seem very high
Closed this issue · 4 comments
Soft-Devel commented
I am getting very high dust concentration results using the this code. What units are the results in? Is it the standard ug/m3 for the 2.5 and everything else? Has anyone else seen those results?
binh-bk commented
I am getting very high dust concentration results using the this code. What units are the results in? Is it the standard ug/m3 for the 2.5 and everything else? Has anyone else seen those results?
The output has a few parameters from the counting of particles with certain size, the concentration of PM1, PM2.5, PM10 under two condition, and a PM2.5 estimation. Could you post your output and point which one you think it was high? For concentration of PM, it should be ug/m3.
Soft-Devel commented
The PM concentrations are on the high end for indoor air quality at 35 ug/m3 avg of 24 hrs as the 99th percentile. The number are hovering lower than 35 ug/m3 so that seems okay but I was expecting single digits mostly and nothing above 35 ug/m3 (as I live in a pretty clean room). Do you think there is any mis configuring? And can you confirm the results are using the ug/m3 unit?
Thanks.
September 15, 2019 2:31 AM, "ezBin" <notifications@github.com (mailto:notifications@github.com?to=%22ezBin%22%20<notifications@github.com>)> wrote:
I am getting very high dust concentration results using the this code. What units are the results in? Is it the standard ug/m3 for the 2.5 and everything else? Has anyone else seen those results?
The output has a few parameters from the counting of particles with certain size, the concentration of PM1, PM2.5, PM10 under two condition, and a PM2.5 estimation. Could you post your output and point which one you think it was high? For concentration of PM, it should be ug/m3.
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09/15/19 03:45:08,33,39,39,31,39,39,2250,726,24,18,0,0,13.1
09/15/19 03:46:13,33,40,40,31,40,40,2142,706,20,20,0,0,12.5
09/15/19 03:46:44,33,40,40,31,40,40,2172,712,20,20,0,0,12.7
09/15/19 03:47:15,30,36,36,30,36,36,1926,636,18,18,0,0,11.2
09/15/19 03:47:47,22,28,28,22,28,28,1566,504,18,18,0,0,9.1
09/15/19 03:48:19,21,27,27,21,27,27,1404,462,18,18,0,0,8.2
09/15/19 03:48:51,21,27,27,21,27,27,1380,458,18,18,0,0,8.0
09/15/19 03:49:23,21,27,27,21,27,27,1416,462,18,18,0,0,8.2
09/15/19 03:49:54,25,31,31,25,31,31,1722,556,24,18,0,0,10.0
09/15/19 03:50:26,27,34,34,27,34,34,1818,598,20,20,0,0,10.6
09/15/19 03:50:58,40,48,48,36,46,48,2610,846,42,20,0,0,15.2
09/15/19 03:51:31,30,36,36,30,36,36,1938,640,18,18,0,0,11.3
09/15/19 03:52:02,39,45,45,34,45,45,2865,854,20,18,0,0,16.8
09/15/19 03:52:33,30,36,36,30,36,36,1986,640,18,18,0,0,11.6
09/15/19 03:53:05,36,42,42,33,42,42,2436,782,32,18,0,0,14.2
09/15/19 03:53:37,30,36,36,30,36,36,1968,640,18,18,0,0,11.5
09/15/19 03:54:09,30,37,37,30,37,37,2229,682,18,18,0,0,13.0
09/15/19 03:54:41,34,40,40,33,40,40,2280,744,20,20,0,0,13.3
09/15/19 03:55:12,33,40,40,31,40,40,2136,706,20,20,0,0,12.5
09/15/19 03:55:43,33,40,40,31,40,40,2178,716,20,20,0,0,12.7
09/15/19 03:56:15,30,36,36,30,36,36,1980,652,20,18,0,0,11.6
09/15/19 03:56:47,22,30,30,22,30,30,1572,518,18,18,0,0,9.1
09/15/19 03:57:19,21,27,27,21,27,27,1452,468,18,18,0,0,8.4
09/15/19 03:57:51,21,27,27,21,27,27,1398,460,18,18,0,0,8.1
09/15/19 03:58:22,21,27,27,21,27,27,1380,456,20,18,0,0,8.0
09/15/19 03:58:54,24,31,31,24,31,31,1695,540,28,18,0,0,9.9
09/15/19 03:59:26,27,34,34,27,34,34,1818,602,20,20,0,0,10.6
09/15/19 03:59:58,37,45,45,34,45,45,2448,790,40,20,0,0,14.3
09/15/19 04:00:30,30,36,36,30,36,36,1920,634,18,18,0,0,11.2
09/15/19 04:01:02,36,43,43,33,43,43,2499,791,34,18,0,0,14.6
09/15/19 04:01:34,30,36,36,30,36,36,1920,630,18,18,0,0,11.2
09/15/19 04:02:06,34,40,40,33,40,40,2412,756,18,18,0,0,14.1
09/15/19 04:02:38,30,36,36,30,36,36,1950,638,18,18,0,0,11.4
09/15/19 04:03:42,33,40,40,31,40,40,2178,712,20,20,0,0,12.7
09/15/19 04:04:14,33,40,40,31,40,40,2160,706,20,20,0,0,12.6
09/15/19 04:04:46,27,33,33,27,33,33,1764,572,18,18,0,0,10.3
09/15/19 04:05:17,21,27,27,21,27,27,1428,464,18,18,0,0,8.3
09/15/19 04:05:48,21,27,27,21,27,27,1386,456,18,18,0,0,8.1
09/15/19 04:06:20,21,27,27,21,27,27,1392,454,18,18,0,0,8.1
09/15/19 04:06:52,21,27,27,21,27,27,1386,452,18,18,0,0,8.1
09/15/19 04:07:24,21,27,27,21,27,27,1392,458,18,18,0,0,8.1
09/15/19 04:07:56,34,42,42,33,42,42,2385,761,36,20,0,0,13.9
09/15/19 04:08:27,31,37,37,30,37,37,2022,662,20,20,0,0,11.8
09/15/19 04:09:00,37,43,43,34,43,43,2601,817,30,18,0,0,15.2
09/15/19 04:09:32,30,36,36,30,36,36,1956,636,18,18,0,0,11.4
09/15/19 04:10:04,40,46,46,36,45,46,2739,865,36,18,0,0,16.0
09/15/19 04:10:36,30,36,36,30,36,36,1950,634,18,18,0,0,11.4
09/15/19 04:11:07,31,39,39,30,39,39,2250,700,24,18,0,0,13.1
09/15/19 04:12:12,33,40,40,31,40,40,2148,706,20,20,0,0,12.5
09/15/19 04:12:44,33,40,40,31,40,40,2178,710,20,20,0,0,12.7
09/15/19 04:13:15,25,33,33,25,33,33,1716,570,18,18,0,0,10.0
09/15/19 04:13:47,21,27,27,21,27,27,1386,456,18,18,0,0,8.1
09/15/19 04:14:52,21,27,27,21,27,27,1392,456,18,18,0,0,8.1
09/15/19 04:15:24,21,27,27,21,27,27,1464,470,18,18,0,0,8.5
09/15/19 04:15:55,33,40,40,31,40,40,2283,726,46,20,0,0,13.3
09/15/19 04:16:26,31,37,37,30,37,37,2130,680,22,20,0,0,12.4
09/15/19 04:16:58,40,48,48,36,46,48,2712,872,26,20,0,0,15.8
09/15/19 04:17:30,30,36,36,30,36,36,1944,640,18,18,0,0,11.3
09/15/19 04:18:02,39,45,45,34,45,45,2682,840,26,18,0,0,15.7
09/15/19 04:18:34,30,36,36,30,36,36,1950,638,18,18,0,0,11.4
09/15/19 04:19:05,34,42,42,33,42,42,2424,782,32,18,0,0,14.2
09/15/19 04:19:37,30,36,36,30,36,36,1944,642,18,18,0,0,11.3
09/15/19 04:20:42,33,40,40,31,40,40,2172,710,20,20,0,0,12.7
09/15/19 04:21:13,33,40,40,31,40,40,2142,708,20,20,0,0,12.5
09/15/19 04:21:45,27,33,33,27,33,33,1734,574,18,18,0,0,10.1
09/15/19 04:22:17,21,27,27,21,27,27,1386,460,18,18,0,0,8.1
09/15/19 04:23:22,21,27,27,21,27,27,1488,482,18,18,0,0,8.7
09/15/19 04:23:53,21,27,27,21,27,27,1386,456,18,18,0,0,8.1
09/15/19 04:24:25,27,34,34,27,34,34,1860,604,20,20,0,0,10.8
09/15/19 04:24:57,37,43,43,34,43,43,2400,788,24,20,0,0,14.0
09/15/19 04:25:30,30,36,36,30,36,36,2010,658,18,18,0,0,11.7
09/15/19 04:26:01,33,39,39,31,39,39,2418,732,26,18,0,0,14.1
09/15/19 04:26:33,30,36,36,30,36,36,2028,658,18,18,0,0,11.8
09/15/19 04:27:05,34,40,40,33,40,40,2589,780,30,18,0,0,15.1
09/15/19 04:27:37,30,36,36,30,36,36,2004,664,18,18,0,0,11.7
09/15/19 04:28:41,33,40,40,31,40,40,2226,720,20,20,0,0,13.0
09/15/19 04:29:13,33,40,40,31,40,40,2214,720,20,20,0,0,12.9
09/15/19 04:29:45,27,33,33,27,33,33,1764,578,18,18,0,0,10.3
09/15/19 04:30:17,21,27,27,21,27,27,1434,472,18,18,0,0,8.3
09/15/19 04:31:21,21,27,27,21,27,27,1452,472,18,18,0,0,8.4
09/15/19 04:31:53,21,27,27,21,27,27,1494,480,18,18,0,0,8.7
09/15/19 04:32:25,28,34,34,28,34,34,1860,614,20,20,0,0,10.8
09/15/19 04:32:57,34,42,42,33,42,42,2298,748,40,20,0,0,13.4
09/15/19 04:33:29,30,36,36,30,36,36,1962,644,18,18,0,0,11.4
09/15/19 04:34:01,36,42,42,33,42,42,2682,808,28,18,0,0,15.7
09/15/19 04:34:33,30,36,36,30,36,36,1992,654,18,18,0,0,11.6
09/15/19 04:35:05,37,45,45,34,45,45,2856,873,28,18,0,0,16.7
09/15/19 04:35:37,30,36,36,30,36,36,1950,642,18,18,0,0,11.4
09/15/19 04:36:41,33,40,40,31,40,40,2196,718,20,20,0,0,12.8
09/15/19 04:37:13,37,43,43,34,43,43,2823,844,22,20,0,0,16.5
09/15/19 04:37:45,25,33,33,25,33,33,1746,572,18,18,0,0,10.2
09/15/19 04:38:16,21,27,27,21,27,27,1464,474,18,18,0,0,8.5
time,pm1.0_cf,pm2.5_cf,pm10_cf,pm1.0_ac,pm2.5_ac,pm10_ac,um03,um05,um1,um2.5,um5.0,um10,pm2.5_es
09/15/19 04:57:53,19,21,21,19,21,21,1278,422,4,4,0,0,7.5
09/15/19 04:58:24,27,31,31,27,31,31,1740,572,16,16,0,0,10.2
09/15/19 04:58:56,27,34,34,27,34,34,1992,634,18,18,0,0,11.6
09/15/19 04:59:28,21,27,27,21,27,27,1446,470,18,18,0,0,8.4
09/15/19 05:00:00,30,36,36,30,36,36,2214,686,22,18,0,0,12.9
09/15/19 05:00:31,21,27,27,21,27,27,1452,472,18,18,0,0,8.4
09/15/19 05:01:03,36,43,43,33,43,43,2805,836,26,20,0,0,16.4
09/15/19 05:01:35,31,39,39,30,39,39,2154,696,20,20,0,0,12.6
09/15/19 05:02:07,36,42,42,33,42,42,2757,812,20,20,0,0,16.1
09/15/19 05:02:39,27,33,33,27,33,33,1806,596,20,18,0,0,10.5
09/15/19 05:03:11,27,33,33,27,33,33,1914,598,18,18,0,0,11.2
09/15/19 05:03:43,25,33,33,25,33,33,1728,568,18,18,0,0,10.1
09/15/19 05:04:15,25,33,33,25,33,33,1722,570,18,18,0,0,10.0
09/15/19 05:04:47,27,33,33,27,33,33,1764,582,18,18,0,0,10.3
09/15/19 05:05:51,33,40,40,31,40,40,2220,724,20,20,0,0,13.0
09/15/19 05:06:23,30,36,36,30,36,36,1944,640,18,18,0,0,11.3
09/15/19 05:06:55,27,33,33,27,33,33,1896,608,18,18,0,0,11.1
09/15/19 05:07:26,21,27,27,21,27,27,1410,458,18,18,0,0,8.2
09/15/19 05:08:31,21,27,27,21,27,27,1416,466,18,18,0,0,8.2
09/15/19 05:09:03,31,39,39,30,39,39,2559,746,28,20,0,0,14.9
09/15/19 05:09:35,31,39,39,30,39,39,2058,678,20,20,0,0,12.0
09/15/19 05:10:06,34,42,42,33,42,42,2565,774,30,20,0,0,15.0
09/15/19 05:10:39,27,33,33,27,33,33,1740,576,18,18,0,0,10.1
09/15/19 05:11:11,27,34,34,27,34,34,2040,628,18,18,0,0,11.9
09/15/19 05:11:43,25,33,33,25,33,33,1788,578,18,18,0,0,10.4
09/15/19 05:12:14,27,33,33,27,33,33,1764,580,18,18,0,0,10.3
09/15/19 05:12:46,25,33,33,25,33,33,1776,576,18,18,0,0,10.4
09/15/19 05:13:51,33,40,40,31,40,40,2184,718,20,20,0,0,12.7
09/15/19 05:14:22,30,36,36,30,36,36,1944,642,18,18,0,0,11.3
09/15/19 05:14:54,27,33,33,27,33,33,1884,598,18,18,0,0,11.0
09/15/19 05:15:26,21,27,27,21,27,27,1434,466,18,18,0,0,8.3
09/15/19 05:16:31,22,27,27,22,27,27,1488,488,20,18,0,0,8.7
09/15/19 05:17:02,33,40,40,31,40,40,2751,774,22,20,0,0,16.1
09/15/19 05:17:34,31,37,37,30,37,37,2100,686,20,20,0,0,12.2
09/15/19 05:18:06,34,42,42,33,42,42,2544,784,20,20,0,0,14.9
09/15/19 05:18:39,27,33,33,27,33,33,1770,570,20,18,0,0,10.3
09/15/19 05:19:10,27,33,33,27,33,33,1920,608,18,18,0,0,11.2
09/15/19 05:19:41,27,33,33,27,33,33,1746,576,18,18,0,0,10.2
09/15/19 05:20:13,25,33,33,25,33,33,1758,574,18,18,0,0,10.2
09/15/19 05:20:45,25,33,33,25,33,33,1722,574,18,18,0,0,10.0
09/15/19 05:21:17,30,36,36,30,36,36,1974,642,20,20,0,0,11.5
09/15/19 05:21:49,33,40,40,31,40,40,2190,724,20,20,0,0,12.8
09/15/19 05:22:20,33,40,40,31,40,40,2148,708,20,20,0,0,12.5
09/15/19 05:22:52,30,36,36,30,36,36,1998,652,20,18,0,0,11.7
09/15/19 05:23:24,22,28,28,22,28,28,1542,504,18,18,0,0,9.0
09/15/19 05:23:56,27,33,33,27,33,33,1977,612,20,18,0,0,11.5
09/15/19 05:25:00,33,39,39,31,39,39,2457,765,18,18,0,0,14.4
09/15/19 05:25:32,24,31,31,24,31,31,1656,540,20,20,0,0,9.6
09/15/19 05:26:04,36,43,43,33,43,43,2610,818,24,20,0,0,15.2
09/15/19 05:26:36,31,37,37,30,37,37,2034,672,20,20,0,0,11.9
09/15/19 05:27:08,31,37,37,30,37,37,2433,724,18,18,0,0,14.2
09/15/19 05:27:40,25,33,33,25,33,33,1740,570,18,18,0,0,10.1
09/15/19 05:28:12,27,34,34,27,34,34,2073,614,18,18,0,0,12.1
09/15/19 05:28:44,27,33,33,27,33,33,1818,588,18,18,0,0,10.6
09/15/19 05:29:16,25,33,33,25,33,33,1734,568,18,18,0,0,10.1
09/15/19 05:30:20,33,40,40,31,40,40,2142,706,20,20,0,0,12.5
09/15/19 05:30:52,30,36,36,30,36,36,1986,644,18,18,0,0,11.6
time,pm1.0_cf,pm2.5_cf,pm10_cf,pm1.0_ac,pm2.5_ac,pm10_ac,um03,um05,um1,um2.5,um5.0,um10,pm2.5_es
09/15/19 05:32:29,19,21,21,19,21,21,1422,458,4,4,0,0,8.3
09/15/19 05:33:01,27,33,33,27,33,33,1848,606,18,16,0,0,10.8
time,pm1.0_cf,pm2.5_cf,pm10_cf,pm1.0_ac,pm2.5_ac,pm10_ac,um03,um05,um1,um2.5,um5.0,um10,pm2.5_es
09/15/19 05:58:07,22,28,28,22,28,28,2055,564,16,16,0,0,12.0
binh-bk commented
A few reports suggested that PMS7003 over-estimated the real PM2.5 concentration. I did my comparison here (for your ref): https://www.b-io.info/posts/studies/dust_sensor/
so the 'true' value of PM2.5 = 0.51*PM2.5 (reported by PMS7003).
Also, for a single-digit concentration, PMS7003 becomes less reliable.
Soft-Devel commented
Okay thanks for the information.
September 18, 2019 7:59 AM, "ezBin" <notifications@github.com (mailto:notifications@github.com?to=%22ezBin%22%20<notifications@github.com>)> wrote:
A few reports suggested that PMS7003 over-estimated the real PM2.5 concentration. I did my comparison here (for your ref): https://www.b-io.info/posts/studies/dust_sensor/ (https://www.b-io.info/posts/studies/dust_sensor/)
so the 'true' value of PM2.5 = 0.51*PM2.5 (reported by PMS7003).
Also, for a single-digit concentration, PMS7003 becomes less reliable.
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