PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/26-19:12:40
G07     308.7          47.1               15.6 +/-    1.57      20.4 +/-    1.57  0.040 / 0.090
G08     131.1          41.3               17.2 +/-    1.20      24.5 +/-    1.20  0.050 / 0.060
G09     297.5          79.4               11.7 +/-    0.74      11.9 +/-    0.74  0.050 / 0.060
G16     42.3           22.0               10.9 +/-    0.72      23.0 +/-    0.72  0.030 / 0.060
G23     145.0          58.1               13.8 +/-    0.83      15.9 +/-    0.83  0.030 / 0.030
G27     75.7           37.0               13.4 +/-    0.74      20.6 +/-    0.74  0.030 / 0.040
G28     225.3          14.8               20.6 +/-    1.74      51.6 +/-    1.74  0.050 / 0.070
G30     288.6          25.5               15.7 +/-    1.53      30.3 +/-    1.53  0.050 / 0.060