Daily Coordinate Time Series
February 15, 2012
November 9, 2018 Y. Bock - expanded to include raw time series
Feb 12, 2019 A. Moore - corrections to Clean and Raw descriptions and reordering
Feb 13, 2019 Y. Bock - reorder so definitions are first, revised comments 

Tar files created by ATS processing at SOPAC for NASA MEaSUREs project 
(at http://garner.ucsd.edu/pub/timeseries/measures/ats/WesternNorthAmerica/)

------------- PRODUCTS -------------------------
Definitions:
Raw: Original estimated time series with large outliers removed
Cleaned Trended ("Clean_Trend"): Mean, outliers, coseismic jumps, and non-seismic jumps are removed
Cleaned Detrended ("Clean_Detrend"): Mean, trend, outliers, coseismic jumps, and non-seismic jumps are removed 
Filtered: Principal Component Analysis (PCA) filter is generated and then applied to the cleaned time series
Residuals ("Resid"): Difference between all estimated model values and the cleaned or filtered time series points

Combination Time Series:

  Filtered Combination (available for Western North American stations processed)
WNAM_Filter_TrendNeuTimeSeries_comb_yyyymmddd.tar
WNAM_Filter_DetrendNeuTimeSeries_comb_yyyymmddd.tar
WNAM_Filter_ResidNeuTimeSeries_comb_yyyymmdddd.tar

  Cleaned Combination (available for all stations processed)
WNAM_Clean_TrendNeuTimeSeries_comb_yyyymmddd.tar
WNAM_Clean_DetrendNeuTimeSeries_comb_yyyymmddd.tar	
WNAM_Clean_ResidNeuTimeSeries_comb_yyyymmddd.tar

Individual JPL (GIPSY) and SOPAC (GAMIT) Time Series:
 
  Filtered and Cleaned: 
  Substitute "sopac" or "jpl" for "comb" in the filenames above.

  Raw
WNAM_Raw_TrendNeuTimeSeries_sopac_yyyymmddd.tar
WNAM_Raw_TrendNeuTimeSeries_jpl_yyyymmddd.tar
	
Details:
(See also directories under http://garner.ucsd.edu/pub/timeseries/measures/ats/)
------------------------------------
Cleaned (using analyze_tseri):
	outliers are determined by several criteria defined in the input driver file

From the driver documentation:	
 weak_obs (big sigma) criteria: give criteria based on the formal errors.
	   If at one epoch, the formal sigmas of one site are bigger
       than the specified criteria, the solution of this site at this epoch will be 
       ignored. This command provides another way to avoid weak solutions to contaminate
       the time series analysis. The unit is mm. The order is e, n, up. 
 outlier (big o-c) criteria mm: give criteria based on
       the postfit residuals. If at one epoch, the residuals of one site are bigger
       than the specified criteria, the solution of this site at this epoch will be 
       ignored. This command prevents outliers from contaminating the time series 
       analysis results. The order is e, n, up.
 very bad_observation criteria mm: 
       If the data have very bad observations, the initial adjustments will be biased.
       Then the residuals are not accurate and some good observations will be 
       considered as outliers. To avoid this case, we set bad_obs to remove very bad
       observations before the adjustment. The default is 3000000 mm. The order is e, n, up.

From the current driver file:	   
  weak_obs (big sigma) criteria (mm) :     20.0 20.0 40.0
  outlier (big o-c) criteria (mm) :     25.0 25.0 35.0
  very bad_obs criteria (mm) :     1000.0 1000.0 3000.0
	
Filtered:
	a Principal Component Analysis (PCA) filter is generated 
	and then applied to the cleaned time series using analyze_tseri.
	PCA parameters in the pca driver file:
	
	  network range (sit_range - longitude and latitude, decimal degrees):    200.0 260.1 31.0 80.5
	  outlier_sigma criterion (enu, mm):  50.0 50.0 100.0
      outlier_value criterion (enu, mm):  100.0 100.0 300.0
	  minimum data percentage (cut_p):    10.0
	  minimum station percentage (cut_t):    3.0
	  reference frame:                   WGS84
	  reference coordinate, rtime:       geodetic 2014.000

	
------------------ inputFiles --------------------------
source_itrf.net  - reference lat, long and ht for all sites for that source
omit_span.list - list of time spans omitted for various sites


On-line documentation (verified 11/9/2018):
http://qoca.jpl.nasa.gov/advclass/tutor_adv.html

st_filter: http://qoca.jpl.nasa.gov/extclass/st_intro.html
PCA: http://qoca.jpl.nasa.gov/extclass/pca_intro.html
ATS: http://qoca.jpl.nasa.gov/advclass/tsa_intro.html