***ITRF 00***
                CUMBERLAND COOP (ALLG),  MARYLAND

Revised Coordinate April 10, 2006
 _____________________________________________________________________________ 
|                                                                             |
|         Antenna Reference Point(ARP): CUMBERLAND COOP CORS ARP              |
|         ------------------------------------------------------              |
|                             PID = DF6303                                    |
|                                                                             |
|                                                                             |
| ITRF00 POSITION (EPOCH 1997.0)                                              |
| Computed in April 2006 using 125 days of data.                              |
|     X =    960972.827 m     latitude    =  39 39 13.91827 N                 |
|     Y =  -4822645.300 m     longitude   = 078 43 50.51407 W                 |
|     Z =   4048582.118 m     ellipsoid height =  174.516   m                 |
|                                                                             |
| ITRF00 VELOCITY                                                             |
| Predicted with on-line HTDP ver 2.8 in Apr 2006                             |
|     VX =  -0.0166 m/yr      northward =  -0.0007 m/yr                       |
|     VY =  -0.0017 m/yr      eastward  =  -0.0166 m/yr                       |
|     VZ =  -0.0022 m/yr      upward    =  -0.0026 m/yr                       |
|                                                                             |
|                                                                             |
| NAD_83 (CORS96) POSITION (EPOCH 2002.0)                                     |
| Transformed from ITRF00 (epoch 1997.0) position in Apr 2006.                |
|     X =    960973.367 m     latitude    =  39 39 13.88939 N                 |
|     Y =  -4822646.750 m     longitude   = 078 43 50.50374 W                 |
|     Z =   4048582.226 m     ellipsoid height =  175.761   m                 |
|                                                                             |
| NAD_83 (CORS96) VELOCITY                                                    |
| Transformed from ITRF00 velocity in Apr 2006.                               |
|     VX =  -0.0000 m/yr      northward =  -0.0034 m/yr                       |
|     VY =   0.0000 m/yr      eastward  =   0.0000 m/yr                       |
|     VZ =  -0.0044 m/yr      upward    =  -0.0028 m/yr                       |
|_____________________________________________________________________________|
|                                                                             |
| L1 Phase Center of the current GPS antenna: CUMBERLAND COOP CORS L1 PC C    |
| ------------------------------------------------------------------------    |
| The Permanent L1/L2 antenna                                                 |
| (Antenna Code = TRM23903.00) was installed on 12/xx/99.                     |
|        The L2 phase center is 0.001 m below the L1 phase center.            |
|                             PID = DF6304                                    |
|                                                                             |
|                                                                             |
| ITRF00 POSITION (EPOCH 1997.0)                                              |
| Computed in April 2006 using 125 days of data.                              |
|     X =    960972.839 m     latitude    =  39 39 13.91831 N                 |
|     Y =  -4822645.357 m     longitude   = 078 43 50.51406 W                 |
|     Z =   4048582.168 m     ellipsoid height =  174.593   m                 |
|                                                                             |
| The ITRF00 VELOCITY of the L1 PC is the same as that for the ARP.           |
|                                                                             |
|                                                                             |
| NAD_83 (CORS96) POSITION (EPOCH 2002.0)                                     |
| Transformed from ITRF00 (epoch 1997.0) position in Apr 2006.                |
|     X =    960973.379 m     latitude    =  39 39 13.88943 N                 |
|     Y =  -4822646.807 m     longitude   = 078 43 50.50372 W                 |
|     Z =   4048582.276 m     ellipsoid height =  175.838   m                 |
|                                                                             |
| The NAD_83 (CORS96) VELOCITY of the L1 PC is the same as that for the ARP.  |
|_____________________________________________________________________________|
   
   
 * Latitude, longitude and ellipsoid height are computed from their
   corresponding cartesian coordinates using dimensions for the
   GRS 80 ellipsoid: semi-major axis = 6,378,137.0 meters
                          flattening = 1/298.257222101...
   
   
 * WARNING: Mixing of antenna types can lead to errors of up to 10 cm.
   in height unless antenna-phase-center variation is properly modeled.


 * The ITRF00 position was revised in Apr 2006.
 * The NAD_83 position & velocity were revised in Apr 2006.

***************************************************************************
***************************************************************************
old coord

                              ***ITRF 00***
                CUMBERLAND COOP (ALLG),  MARYLAND

 Retrieved from NGS DataBase on 04/10/06 at 12:47:24.
 _____________________________________________________________________________ 
|                                                                             |
|         Antenna Reference Point(ARP): CUMBERLAND COOP CORS ARP              |
|         ------------------------------------------------------              |
|                             PID = DF6303                                    |
|                                                                             |
|                                                                             |
| ITRF00 POSITION (EPOCH 1997.0)                                              |
| Computed by OPUS in Apr 2002 using 10 days of data in 2nd month             |
|     X =    960972.822 m     latitude    =  39 39 13.91714 N                 |
|     Y =  -4822645.316 m     longitude   = 078 43 50.51442 W                 |
|     Z =   4048582.084 m     ellipsoid height =  174.506   m                 |
|                                                                             |
| ITRF00 VELOCITY                                                             |
| Predicted with on-line HTDP May 2002.                                       |
|     VX =  -0.0166 m/yr      northward =  -0.0007 m/yr                       |
|     VY =  -0.0017 m/yr      eastward  =  -0.0166 m/yr                       |
|     VZ =  -0.0022 m/yr      upward    =  -0.0026 m/yr                       |
|                                                                             |
|                                                                             |
| NAD_83 (CORS96) POSITION (EPOCH 2002.0)                                     |
| Computed by OPUS in Apr 2002 using 10 days of data in 2nd month             |
|     X =    960973.359 m     latitude    =  39 39 13.88898 N                 |
|     Y =  -4822646.765 m     longitude   = 078 43 50.50421 W                 |
|     Z =   4048582.221 m     ellipsoid height =  175.768   m                 |
|                                                                             |
| NAD_83 (CORS96) VELOCITY                                                    |
| Predicted with on-line HTDP May 2002.                                       |
|     VX =   0.0000 m/yr      northward =   0.0000 m/yr                       |
|     VY =   0.0000 m/yr      eastward  =   0.0000 m/yr                       |
|     VZ =   0.0000 m/yr      upward    =   0.0000 m/yr                       |
|_____________________________________________________________________________|
|                                                                             |
| L1 Phase Center of the current GPS antenna: CUMBERLAND COOP CORS L1 PC C    |
| ------------------------------------------------------------------------    |
| The Permanent L1/L2 antenna                                                 |
| (Antenna Code = TRM23903.00) was installed on 12/xx/99.                     |
|        The L2 phase center is 0.001 m below the L1 phase center.            |
|                             PID = DF6304                                    |
|                                                                             |
|                                                                             |
| ITRF00 POSITION (EPOCH 1997.0)                                              |
| Computed by OPUS in Apr 2002 using 10 days of data in 2nd month             |
|     X =    960972.834 m     latitude    =  39 39 13.91718 N                 |
|     Y =  -4822645.373 m     longitude   = 078 43 50.51440 W                 |
|     Z =   4048582.134 m     ellipsoid height =  174.583   m                 |
|                                                                             |
| The ITRF00 VELOCITY of the L1 PC is the same as that for the ARP.           |
|                                                                             |
|                                                                             |
| NAD_83 (CORS96) POSITION (EPOCH 2002.0)                                     |
| Computed by OPUS in Apr 2002 using 10 days of data in 2nd month             |
|     X =    960973.371 m     latitude    =  39 39 13.88902 N                 |
|     Y =  -4822646.822 m     longitude   = 078 43 50.50420 W                 |
|     Z =   4048582.271 m     ellipsoid height =  175.845   m                 |
|                                                                             |
| The NAD_83 (CORS96) VELOCITY of the L1 PC is the same as that for the ARP.  |
|_____________________________________________________________________________|
   
   
 * Latitude, longitude and ellipsoid height are computed from their
   corresponding cartesian coordinates using dimensions for the
   GRS 80 ellipsoid: semi-major axis = 6,378,137.0 meters
                          flattening = 1/298.257222101...
   
   
 * WARNING: Mixing of antenna types can lead to errors of up to 10 cm.
   in height unless antenna-phase-center variation is properly modeled.