assessment NEX run part2: adding plots of number of stations per tiles

assessment NEX run 3 North America with prediction info for training and testing stations

assessment NEX run 3: modifications to analyze results with figures

assessment NEX run part1: debugging extraction of training and testing info function

assessment NEX run part3: major updates to generate stat and fig for specific tiles

assessment NEX run part2: debugging

script NEX run assessment part1: major changes to mosaic delta, deviation, monthly predictions and copy back results

global scalingup assessment modifications of stage 5 workflow code for diagnosis of issues

global scalingup assessment part 3, clean up and call to modified stage 5 code from workflow

global scalingup assessment part3 initial commit to diaganose and evaluate specific tiles issues (eg LST)