###Group "[publiclaboratory](https://groups.google.com/group/publiclaboratory)"### 8/24/2012: 454 9/12/2012: 530 9/19/2012: 646 10/2/2012: 700 ###Group "[grassrootsmapping](https://groups.google.com/group/grassrootsmapping)"### 9/12/2012: 486 9/19/2012: 559 ###Group "[plots-boston](https://groups.google.com/group/plots-boston)"### 10/2/2012: 68 ###Group "[plots-spectrometry](https://groups.google.com/group/plots-spectrometry)"### 10/2/2012: 67