May 30, 2023
Dave Zenk

Digging into the Field Log and Rinex headers, I see a mismatch on most marks.

I think the Field Logs are correct, at least they seem plausible.
The Rinex headers match the Field Logs in all cases (for the Receiver SN)
The Rinex headers mismatch the Field Logs in most cases (for the Antenna SN)

WLP2 does not have a Field Log, and the Rinex header lacks a Receiver SN and also lacks an Antenna SN.
WLP2 is a local non-NCN CORS and does not need a field log, nor photos. 
But, the RINEX header ought to be correct!

ANTENNA SN in Field Log seem plausibly correct (at least they are different and each Station occurrence uses the same Antenna SN)
But, the Rinex headers used 6122223925 for all Stations except 863F. This is clearly not correct.

OU18 - I am unsure that the Antenna SN in the Field Log is correct as it is only 8 characters, not 10. 
       Furthermore, it ends in 3925. 
       So, it seems that 6122223925 would be the correct SN. For the purposes of the project, I'll accept the RINEX Header as correct.
       This discrepancy should be addressed with the field crew leader and noted in the Project Report.
       (Note, the actual Final Report for this project shows 6122223925 as the Antenna SN of OU18.)


Here's my tabulation:
  Chesapeake Sample Project                                        
                       ======Receiver SN=======       =============Antenna SN================     ==Antenna Height==
  Session   Station    Field Log          RINEX       Field Log          RINEX                    Field Log    RINEX 
  041       863F       5832R50297    5832R50297       6122223928    6122223928                    1.9991      1.9990
  048       863F       5832R50297    5832R50297       6122223928    6122223928                    1.9991      1.9990
  054       863F       5832R50297    5832R50297       6122223928    6122223928                    1.9991      1.9990

  041       BRMR       5832R50274    5832R50274       6122223766    6122223925                    1.9999      1.9990
  048       BRMR       5832R50274    5832R50274       6122223766    6122223925                    1.9999      2.0000
  054       BRMR       5832R50274    5832R50274       6122223766    6122223925                    1.9999      2.0000

  041       GP99       5832R50338    5832R50338       6122223882    6122223925                    2.0003      2.0000
  048       GP99       5832R50338    5832R50338       6122223882    6122223925                    2.0003      2.0000
  054       GP99       5832R50338    5832R50338       6122223882    6122223925                    2.0003      2.0000

  041       OU03       5820R50154    5820R50154       1441037967    6122223925                    1.9999      2.0000
  048       OU03       5820R50154    5820R50154       1441037967    6122223925                    1.9990      1.9990
  054       OU03       5820R50154    5820R50154       1441037967    6122223925                    1.9990      1.9990

  041       OU18       5834R50371    5834R50371       ..22223925    6122223925 (use 6122223925)   2.0000      2.0000
  048       OU18       5834R50371    5834R50371       ..22223925    6122223925 (use 6122223925)   2.0004      2.0000
  054       OU18       5834R50371    5834R50371       ..22223925    6122223925 (use 6122223925)   2.0004      2.0000

  041       W416       5835R50374    5835R50374       6122223769    6122223925                    2.0000      2.0000
  048       W416       5835R50374    5835R50374       6122223769    6122223925                    2.0000      2.0000
  054       W416       5835R50374    5835R50374       6122223769    6122223925                    2.0000      2.0000

  048       WLP2       none          none             none          none                          none        0.0000
  054       WLP2       none          none             none          none                          none        0.0000
  055       WLP2       none          none             none          none                          none        0.0000
  063       WLP2       none          none             none          none                          none        0.0000

Receiver Model
The Field Logs show NETR9 as the Receiver for all stations, confirmed as correct.
WLP2 uses a NETR5.


Antenna Model
The Field Logs show TRM115000.00 antenna for all stations, confirmed as correct.
WLP2 uses TRM57971.00.


Antenna Heights
The Field Logs and RINEX files disagree in some cases about antenna heights.
Most are at the millimeter level. But, which is correct?
When in doubt, we should use the Field Log values.

Dave Zenk