PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/15-19:58:10
G07     309.3          47.4               19.4 +/-    0.95      25.3 +/-    0.95  0.040 / 0.060
G08     129.8          41.8               25.0 +/-    0.92      35.3 +/-    0.92  0.050 / 0.050
G09     295.8          79.7               17.6 +/-    0.44      17.8 +/-    0.44  0.040 / 0.070
G16     42.3           21.9               15.3 +/-    2.81      32.1 +/-    2.81  0.050 / 0.050
G23     145.5          58.2               22.5 +/-    0.31      25.9 +/-    0.31  0.040 / 0.030
G27     75.1           36.9               20.7 +/-    0.99      31.8 +/-    0.99  0.030 / 0.020
G28     225.5          15.2               26.1 +/-    3.11      64.4 +/-    3.11  0.080 / 0.190
G30     289.2          26.2               20.6 +/-    1.25      39.2 +/-    1.25  0.440 / 0.330