PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-17:43:00
G03     206.2          55.9               15.6 +/-    0.74      18.5 +/-    0.74  0.250 / 0.370
G07     256.7          14.7               14.7 +/-    1.25      36.7 +/-    1.25  0.290 / 0.510
G09     310.0          27.0               10.8 +/-    1.00      20.2 +/-    1.00  0.070 / 0.080
G16     95.3           64.5               16.3 +/-    0.87      17.9 +/-    0.87  0.050 / 0.080
G22     186.0          39.9               15.3 +/-    1.11      22.3 +/-    1.11  0.040 / 0.030
G23     333.3          62.0               13.6 +/-    0.38      15.2 +/-    0.38  0.030 / 0.030
G27     133.6          10.8               11.5 +/-   34.46      31.5 +/-   34.46  0.040 / 0.030