PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-16:58:00
G01     124.5          13.8               17.6 +/-    1.66      45.0 +/-    1.66  0.030 / 0.050
G07     61.6           69.2               16.3 +/-    0.47      17.3 +/-    0.47  0.050 / 0.050
G08     49.0           38.6               14.1 +/-    0.87      21.0 +/-    0.87  0.030 / 0.030
G09     177.7          32.5               18.6 +/-    1.62      31.0 +/-    1.62  0.020 / 0.030
G11     115.5          36.9               17.4 +/-    0.76      26.7 +/-    0.76  0.030 / 0.030
G13     320.2          14.2               14.1 +/-    1.82      35.7 +/-    1.82  0.030 / 0.030
G17     201.2          15.8               20.2 +/-    3.52      49.3 +/-    3.52  0.100 / 0.190
G18     101.0          18.1               14.8 +/-    1.57      34.1 +/-    1.57  0.110 / 0.170
G28     281.7          54.6               17.2 +/-    2.71      20.6 +/-    2.71  0.170 / 0.200
G30     337.8          63.6               15.5 +/-    0.68      17.1 +/-    0.68  0.210 / 0.270