###Group "[publiclaboratory](https://groups.google.com/group/publiclaboratory)"### 8/24/2012: 454 9/12/2012: 530 9/19/2012: 646 10/2/2012: 700 10/30/2012: 751 1/7/2013: 982 1/21/2013: 1002 ###Group "[grassrootsmapping](https://groups.google.com/group/grassrootsmapping)"### 9/12/2012: 486 9/19/2012: 559 10/30/2012: 632 ###Group "[plots-spectrometry](https://groups.google.com/group/plots-spectrometry)"### 10/2/2012: 67 10/30/2012: 126 12/19/2012: 275 1/7/2012: 353 ###Group "[plots-nyc](https://groups.google.com/group/plots-nyc)"### 10/30/2012: 110 1/7/2013: 133 ###Group "[plots-boston](https://groups.google.com/group/plots-boston)"### 10/2/2012: 68 1/7/2013: 111 ###Group "[plots-gulfcoast](https://groups.google.com/group/plots-gulfcoast)"### 1/7/2013: 35 ###Group "[plots-norcal](https://groups.google.com/group/plots-norcal)"### 1/7/2013: 70