PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-19:12:50
G01     96.2           30.2               16.2 +/-    0.60      28.3 +/-    0.60  0.110 / 0.210
G07     120.2          50.5               18.3 +/-    0.32      23.0 +/-    0.32  0.070 / 0.190
G08     42.1           14.1                9.7 +/-    1.42      24.7 +/-    1.42  0.050 / 0.070
G11     76.3           42.1               16.1 +/-    0.85      22.6 +/-    0.85  0.050 / 0.070
G13     300.4          33.9               16.5 +/-    1.17      26.7 +/-    1.17  0.060 / 0.140
G17     211.8          44.8               20.8 +/-    1.81      28.1 +/-    1.81  0.060 / 0.120
G18     69.6           24.7               13.8 +/-    0.49      27.1 +/-    0.49  0.040 / 0.090
G19     212.6          21.1               22.8 +/-    1.72      48.8 +/-    1.72  0.050 / 0.070
G28     339.3          61.9               15.6 +/-    0.60      17.5 +/-    0.60  0.020 / 0.060
G30     85.2           78.2               17.8 +/-    0.75      18.2 +/-    0.75  0.030 / 0.060