1. R-script ion probe data analysis Joe Kunkel and Sunyoung Jang UMass Amherst

2. ASET data input to R-scripts ASET software was used to collect static pH calibration data, dynamic uV-difference data and grid scan data relative to an artificial proton diffusion source. The data were exported to comma delimited text files. R-scripts were written to access the data.

3. 1 Calibration Curves June 27 June 29

4. July 6 Callibration Curve

5. July 6, Expor001.R R-script

6. July 6, Expor002.R R-script

7. July 10, Callibration Curve

8. July 10, Probe Image 640x480

9. July 10, Expor005.R R-script

10. July 10, Expor006.R R-script

11. July 12, 800 x 600 probe image

12. July 11, Callibration Curve

13. July 12, Expor014.R R-script

14. July 12, Expor015.R R-script

15. END Data sets:  June 29 SUN001.TXT - an x-egress.  July 6 EXPOR000.TXT - an x-egress. EXPOR001.TXT - grid scan 1 EXPOR002.TXT - grid scan 2  July 10 EXPOR003.TXT - an x-egress. (= EXPOR004.TXT ) EXPOR004.TXT - grid scan 3 974 min EXPOR005.TXT - grid scan 4 993 min EXPOR006.TXT - grid scan 5 1010 min  July 11 EXPOR007.TXT - grid scan 6 682 min (= EXPOR008.TXT ) EXPOR009.TXT - grid scan 7 698 min EXPOR010.TXT - grid scan 8 782 min EXPOR011.TXT - grid scan 9 799 min EXPOR012.TXT - grid scan 10 843 min EXPOR013.TXT - grid scan 11 859 min  July 12 EXPOR016.TXT - vpo callibration record. EXPOR014.TXT - grid scan 12 717 min EXPOR015.TXT - grid scan 13 733 min