| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 04/27/2009 | 0000 | 09/08/2009 | 0825 | Incorrect |
| Subject: | GRW/AOS/M1 - CPC undercounting |
| DataStreams: | grwnoaaaosM1.b1, grwaosM1.a1, grwnoaaaosavgM1.b1 |
| Description: | The CPC was undercounting by about 10-20 percent relative to the CCN. After cleaning the CPC and replacing the butanol, the signal increased to above that of the CCN. Increase CPC signal so that it equals the CCN signal at the maximum SS value. The corrected signal will represent relative and not an absolute particle concentration. |
| Suggestions: | |
| Measurements: | grwnoaaaosM1.b1: more
grwnoaaaosavgM1.b1: more grwaosM1.a1: more |