PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/14-21:57:40
G01     126.9          11.9               21.9 +/-    2.98      58.8 +/-    2.98  0.270 / 0.300
G07     52.1           69.7               18.1 +/-    0.21      19.2 +/-    0.21  0.290 / 0.360
G08     52.3           42.6               16.1 +/-    1.25      22.5 +/-    1.25  0.080 / 0.380
G09     179.0          36.8               20.5 +/-    0.68      31.5 +/-    0.68  0.140 / 0.280
G11     121.4          34.8               20.0 +/-    1.40      31.9 +/-    1.40  0.090 / 0.090
G13     321.3          11.2                2.1 +/-   28.04       5.8 +/-   28.04  0.140 / 0.070
G17     201.0          12.7               22.9 +/-    3.27      60.2 +/-    3.27  0.040 / 0.050
G28     277.4          53.4               17.9 +/-    3.37      21.7 +/-    3.37  0.050 / 0.060
G30     338.3          63.2               16.3 +/-    0.42      18.1 +/-    0.42  0.020 / 0.030