This dir is first copy all files from:
/data1/leona/Precipitation/HongXu/AdjDlyR+S/AdjDlyR+S_v2016/stns3346_dataQCd/
which are QCd daily R+S for 3346 stations

Then update 319 files from:
/data4/yfeng/Precipitation/fix_TraceFlags/QCd_fixedTflags/
which are applied remove Tflags from /data4/yfeng/Precipitation/fix_TraceFlags/Snow_corrected/*act.txt

Further QC'd in Marc-May 2020: There are erroneous values (mostly zero monthly P) at 73 stations that were 
set to missing in March-May 2020.

Further QC'd done in Feb 2022: More random erroneously large and small (mostly zero monthly P) values were removed based on a new QC method developed in 2022 (Manuscript in preparation). 96 erroneously large monthly P totals and 72 erroneously small monthly P totals were identified, in which 47 were false zeros. Their respective daily values are set to missing.