PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-15:27:50
G03     219.0          63.6                9.9 +/-    1.46      11.0 +/-    1.46  0.100 / 0.370
G09     306.3          21.6                8.2 +/-    3.36      17.4 +/-    3.36  0.110 / 0.380
G14     103.0          13.9                7.9 +/-    1.87      20.1 +/-    1.87  0.040 / 0.050
G16     112.5          62.5                9.2 +/-    0.82      10.2 +/-    0.82  0.030 / 0.050
G22     186.7          46.2               10.2 +/-    0.69      13.4 +/-    0.69  0.040 / 0.050
G23     327.9          57.2                8.3 +/-    0.54       9.7 +/-    0.54  0.040 / 0.040
G26     60.0           47.2                7.8 +/-    0.54      10.2 +/-    0.54  0.040 / 0.060
G31     55.7           13.9                6.7 +/-    3.44      17.1 +/-    3.44  0.050 / 0.060