###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: 67

###Group "[plots-spectrometry](https://groups.google.com/group/plots-spectrometry)"###

10/2/2012: 67