PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-13:28:10
G02     262.8          78.8                4.6 +/-    0.40       4.7 +/-    0.40  0.050 / 0.210
G05     171.4          19.5                5.8 +/-    0.96      12.8 +/-    0.96  0.060 / 0.200
G06     39.7           51.4                4.0 +/-    0.47       4.9 +/-    0.47  0.090 / 0.130
G12     321.1          59.1                4.0 +/-    0.57       4.5 +/-    0.57  0.140 / 0.150
G17     74.4           20.1                4.8 +/-    0.66      10.5 +/-    0.66  0.050 / 0.040
G19     63.7           33.1                5.2 +/-    1.22       8.6 +/-    1.22  0.040 / 0.040
G24     240.9          31.2                6.3 +/-    0.72      10.8 +/-    0.72  0.060 / 0.040
G25     317.0          16.4                3.0 +/-    4.53       7.1 +/-    4.53  0.060 / 0.040