1        National Geodetic Survey,   Retrieval Date = AUGUST  1, 2005
 AF9640 ***********************************************************************
 AF9640  CORS        -  This is a GPS Continuously Operating Reference Station.
 AF9640  DESIGNATION -  YREKA CORS ARP
 AF9640  CORS_ID     -  YBHB
 AF9640  PID         -  AF9640
 AF9640  STATE/COUNTY-  CA/SISKIYOU
 AF9640  USGS QUAD   -  YREKA (1984)
 AF9640
 AF9640                         *CURRENT SURVEY CONTROL
 AF9640  ___________________________________________________________________
 AF9640* NAD 83(CORS)-  41 43 53.94340(N)    122 42 38.59332(W)     ADJUSTED  
 AF9640* NAVD 88     -      1089.9    (meters)    3576.     (feet)  GPS OBS   
 AF9640  ___________________________________________________________________
 AF9640  EPOCH DATE  -        2002.00
 AF9640  X           -  -2,576,447.202 (meters)                     COMP
 AF9640  Y           -  -4,011,577.730 (meters)                     COMP
 AF9640  Z           -   4,224,117.001 (meters)                     COMP
 AF9640  ELLIP HEIGHT-        1066.26  (meters)          (03/??/02) GPS OBS
 AF9640  GEOID HEIGHT-         -23.64  (meters)                     GEOID03
 AF9640
 AF9640  HORZ ORDER  -  SPECIAL (CORS)
 AF9640  ELLP ORDER  -  SPECIAL (CORS)
 AF9640
 AF9640.ITRF positions are available for this station.
 AF9640.The coordinates were established by GPS observations
 AF9640.and adjusted by the National Geodetic Survey in March 2002.
 AF9640.The coordinates are valid at the epoch date displayed above.
 AF9640.The epoch date for horizontal control is a decimal equivalence
 AF9640.of Year/Month/Day.
 AF9640
 AF9640.The orthometric height was determined by GPS observations and a
 AF9640.high-resolution geoid model.
 AF9640
 AF9640.The PID for the CORS L1 Phase Center is AE1836.
 AF9640
 AF9640.The XYZ, and position/ellipsoidal ht. are equivalent.
 AF9640
 AF9640.The ellipsoidal height was determined by GPS observations
 AF9640.and is referenced to NAD 83.
 AF9640
 AF9640.The geoid height was determined by GEOID03.
 AF9640
 AF9640;                    North         East     Units Scale Factor Converg.
 AF9640;SPC CA 1     -   766,555.683 1,940,869.162   MT  1.00001715   -0 27 53.0
 AF9640;SPC CA 1     - 2,514,941.44  6,367,668.24   sFT  1.00001715   -0 27 53.0
 AF9640
 AF9640!             -  Elev Factor  x  Scale Factor =   Combined Factor
 AF9640!SPC CA 1     -   0.99983279  x   1.00001715  =   0.99984994
 AF9640
 AF9640                          SUPERSEDED SURVEY CONTROL
 AF9640
 AF9640  NAD 83(CORS)-  41 43 53.94224(N)    122 42 38.59244(W) AD(1997.00) c
 AF9640  ELLIP H (07/??/00) 1066.28   (m)                       GP(1997.00) c c
 AF9640  NAD 83(CORS)-  41 43 53.94207(N)    122 42 38.59279(W) AD(1997.00) c
 AF9640  ELLIP H (11/??/99) 1066.21   (m)                       GP(1997.00) c c
 AF9640  NAD 83(CORS)-  41 43 53.94207(N)    122 42 38.59279(W) AD(1997.00) c
 AF9640  NAD 83(CORS)-  41 43 53.94187(N)    122 42 38.59247(W) AD(1996.00) c
 AF9640  ELLIP H (08/??/97) 1066.21   (m)                       GP(1997.00) c c
 AF9640  ELLIP H (08/??/97) 1066.21   (m)                       GP(1996.00) c c
 AF9640
 AF9640.Superseded values are not recommended for survey control.
 AF9640.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
 AF9640.See file dsdata.txt to determine how the superseded data were derived.
 AF9640
 AF9640_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TEM2405820023(NAD 83)
 AF9640_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
 AF9640
 AF9640                          STATION DESCRIPTION
 AF9640
 AF9640'DESCRIBED BY NATIONAL GEODETIC SURVEY 2002
 AF9640'STATION IS A GPS CORS.  LATEST INFORMATION INCLUDING POSITIONS AND
 AF9640'VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES ACCESSIBLE
 AF9640'BY ANONYMOUS FTP OR THE WORLDWIDE WEB.
 AF9640'   FTP CORS.NGS.NOAA.GOV: CORS/COORD  AND  CORS/STATION_LOG
 AF9640'   HTTP://WWW.NGS.NOAA.GOV  UNDER PRODUCTS AND SERVICES.