Updates to SO2 DaqFactory code & Ameriflux Array

Added section to Startup sequence to wait until an even 12th minute to begin switching the above/below canopy valve.

Also found that the above canopy sample time was still 10s short of 6m cycle so I added one more valve set & wait command, now above and below canopy switching are both exactly 6m long & the cycles aren't shifting every hour like they had been previously.

A day or two ago Ryan and I both noticed that the below canopy mode was only running for 4m, so we added 2 more minutes to the code. Appears that the 4m mode started back around the 12-13th time frame. Ryan is calculating the SO2 detection limit at 4m. He will change sample and zero filters on Monday.

I also moved the wait for next hour line of the zeroing code to the beginning of the sequence so it won't zero right away when started anymore.

DF says it only has 13 days remaining on the trial version which gets us to the 7th, but I think as long as the program stays running and doesn't restart on the 7th or 8th it will continue to run until the campaign is over.

Will probably work with Steve on Monday to look at the SO2 artifact in the teflon tubing and make the switch to the new stainless lines. Will probably do a multipoint std add as well, intercept should be artifact and give us a nice cal. For now I am going to give Ryan the slope I got from the cals done at UH before the project to apply to the prelim data. He was able to split the data into 2 waves with interpolation and is working to apply baseline corrections. I gave him some example code from the Aztec that may help him write his macro.

We will also probably tie the CO cal stream into the std add line downstream of the flow controller and let them cal at the same time we do at 2:30 & 3:30 am.

Also picked up a 100' extension cord at Cook's and got the array started up. We are roughly in the center E-W and little bit on the north side. Further north seemed to be much more open than the rest of the area around so we moved to a "more representative" area, I hope. Because 3 of the sensors have short leads we went with 3 in a triangle in the middle and the other six ~15' out in roughly a hexagon shape. The sun was very hign so I don't think we will have a problem with the SZA having the sun come in from an area outside what will be mapped by Gil's group.

On Monday David will take pictures of each sensor (surrounding plants and view looking up) and record GPS locations.

Still need to get SAFS cal sequence cheatsheet from Barry so I can get that going, but so far the rest of the instruments seem to be working fairly well.

JF