PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-16:12:40
G03     212.4          60.1               10.9 +/-    1.23      12.4 +/-    1.23  0.190 / 0.370
G07     254.0          12.3               11.4 +/-    3.69      30.1 +/-    3.69  0.110 / 0.370
G09     308.2          24.3               10.1 +/-    1.31      20.0 +/-    1.31  0.040 / 0.050
G14     106.0          11.2                9.4 +/-    2.19      25.5 +/-    2.19  0.040 / 0.030
G16     103.8          63.8               10.0 +/-    0.99      11.0 +/-    0.99  0.080 / 0.070
G22     186.0          42.8                9.6 +/-    0.55      13.3 +/-    0.55  0.060 / 0.050
G23     330.9          59.8                9.0 +/-    0.55      10.3 +/-    0.55  0.030 / 0.050
G26     56.1           44.8                9.4 +/-    0.57      12.7 +/-    0.57  0.020 / 0.040
G31     57.7           11.5                7.5 +/-    2.26      20.3 +/-    2.26  0.230 / 0.240