'csv.writer' lines rewritten tighter
normaized NDVI: begin implementing for text output
normalize NDVI: adjust SAS values in text output
on retrieve panel, save existing panel if valid
Try to block daily irradiance previews while making dataset.
 Does not block, but does not seem to interfere either.
removed VB comments, redundant code
begin implementing Excel charts
set Excel chart type
working on Excel error bars, still some bugs
Excel error bars working, still bug when NDVI avg missing
bug fixes, Excel summaries were off index by 1
bug fix; Excel now correctly summarizes days with 1 item