SGP/WPDN - updated station locations for 4 stations

Four stations were updated to more accurate position using GPS system. The updated site 
information for these four stations is as follows:


                       Site    Site    N Lat            Lat     W long         Long     
Elev.    Elev.Decl.   True    E beam  E beam  N beam  N beam  V beam  V beam
#Site Location  ST      #        ID     (degminsec)     (dec.)  (degminsec)     (dec.) 
(ft.)    (m)     (deg)  N       az.     el.     az.     el.     az.     el.
#
Fairbury        NE       3      FBYN1   40 04 48        40.08    97 18 36        97.31  
1420    432.8    6.49    -10    80.00   73.70   350.00  73.70   350.00  90.00
Haviland        KS       6      HVLK1   37 39 00        37.65    99 06 36        99.11  
2125    647.7    7.52    -10    80.00   73.70   350.00  73.70   350.00  90.00
Neodesha        KS       7      NDSK1   37 18 00        37.30    95 36 00        95.60
886.47 232       5.29      0    90.00   73.70     0.00  73.70     0.00  90.00
Platteville     CO       1      PLTC2   40 10 48        40.18   104 43 48       104.73  
5000    1523.9  11.01      0    90.00   73.70   0.00    73.70   0.00    90.00

• magnetic declination(magnetic_dcn_stn)
• vertical beam azimuth angle(vbeam_az_stn)
• east beam azimuth angle(ebeam_az_stn)
• lat(lat)
• lon(lon)
• Station latitude(lat_stn)
• Station altitude(alt_stn)
• north beam elevation angle(ebeam_el_stn)
• vertical beam elevation angle(vbeam_el_stn)
• Dummy altitude for Zeb(alt)
• north beam azimuth angle(nbeam_az_stn)
• orientation from true N(orient_n_stn)
• north beam elevation angle(nbeam_el_stn)
• Station longitude(lon_stn)

• magnetic declination(magnetic_dcn_stn)
• vertical beam elevation angle(vbeam_el_stn)
• north beam azimuth angle(nbeam_az_stn)
• Station altitude(alt_stn)
• north beam elevation angle(ebeam_el_stn)
• orientation from true N(orient_n_stn)
• vertical beam azimuth angle(vbeam_az_stn)
• lon(lon)
• east beam azimuth angle(ebeam_az_stn)
• north beam elevation angle(nbeam_el_stn)
• Station longitude(lon_stn)
• Station latitude(lat_stn)
• Dummy altitude for Zeb(alt)
• lat(lat)