File Format for stacov output

The first line gives the number of parameters and the date.

1X,I4,15x,A7

PARAMETERS ON 02JAN29.

The parameters are then listed with each line containing a parameter number,
name, value, and one sigma error.

1X,I4,2X,A16,2X,E22.15,6X,E21.15

    1  ALGO STA X         0.918129324172712E+06  +-  0.320250595978640E+01
    2  ALGO STA Y        -0.434607130570456E+07  +-  0.240287059155408E+01
    3  ALGO STA Z         0.456197782393571E+07  +-  0.228818367253491E+01

Ocean loading and harmonic parameters are listed with similar convention
 1009  ALBH OCLCS 1E     -0.856065317310183E-03  +-  0.339339287875400E-03
  115  ALBH OCLCS 1N      0.107729850715988E-01  +-  0.798390949927380E+00
  116  ALBH OCLSN 1N     -0.853282481503162E-01  +-  0.796730510344350E+00
 1747  ALBH OCLCS 1V      0.158157775847855E-02  +-  0.394992403271376E-03
    4  VESL HRMCOS1X     -0.522130900447153E-03  +-  0.373273047910312E-03
    5  VESL HRMSIN1X     -0.181393359283449E-02  +-  0.523993615053977E-02
where CS (COS in case of hrm) indicates the cosine or in-phase amplitude of
the motion; SN (or SIN in case of hrm) indicates the sine or out-of-phase
amplitude; the number that follows indicates tidal index or mode index;
and ENV or XYZ indicate component directions.

Earth orientation parameters may be represented in one of two ways. For stacov
files created for a single epoch:

  238  UT1-UTC            0.190232235500804E+00  +-  0.215599999999782E-07
  239  UT1-UTCRATE       -0.596044018108753E-08  +-  0.573715006267045E-10
  240  XPOLEMOTION        0.125323748374654E+00  +-  0.117436261327368E+00
  241  XPOLERATE         -0.477396220678599E-08  +-  0.502596911650933E-09
  242  YPOLEMOTION        0.290831014836025E+00  +-  0.117906667025798E+00
  243  YPOLERATE         -0.168168503779952E-07  +-  0.504982194540690E-09

In multiday stacov files created by stamrg, each earth orientation parameter
name is appended with the three character month name and the two digit day of
month:

  352  UT1-UTC    JUL09   0.190232235500803E+00  +-  0.215599999999260E-07
  353  UT1-UTCRATEJUL09  -0.593292632087209E-08  +-  0.569215859112899E-10
  354  XPOLEMOTIONJUL09   0.127180292942825E+00  +-  0.461465220692773E-01
  355  XPOLERATE  JUL09  -0.519792616339102E-08  +-  0.497882532183511E-09
  356  YPOLEMOTIONJUL09   0.290317744217764E+00  +-  0.453256254132590E-01
  357  YPOLERATE  JUL09  -0.170156131535948E-07  +-  0.498819774238419E-09

Next, the correlation matrix is given.  Each line contains the two integers
corresponding to the parameter numbers followed by the correlation of those two
parameters, filling out the upper triangular matrix one line at a time.

1X,I4,2X,I4,2X,E22.15

    2     1   0.142277631191750E+00
    3     1  -0.139348561652196E+00
    3     2   0.960336039073888E+00

Next, antenna offset are given corresponding to any station position parameters
in the file.  The name is followed the word ANTENNA, the data type, and then
the vertical, north, and east offsets in meters.

1X,A16,2X,F7.4,2X,F10.4,2X,F10.4
 
 ALGO ANTENNA LC    0.1822      0.0000      0.0000    !up north east (m)
 ARTU ANTENNA LC    0.1618      0.0000      0.0000    !up north east (m)

Units

Distances are given in meters, time in seconds, and polar motion in
arc-seconds.  Latitude, longitude, and their repeatabilities are given in
degrees, but the formal errors for latitude and longitude are given in meters.
Geodetic coordinates refer to the WGS84 reference ellipsoid.
Motion amplitudes and their formal errors are both given in meters.

Author

Michael B. Heflin


first line on file also contains the epoch of the coordinates
velocity records are in mm/year (365.25 days in 1 year)