PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-20:12:30
G02     256.1          78.2               10.2 +/-    0.41      10.4 +/-    0.41  0.060 / 0.200
G05     169.7          20.5               15.0 +/-    0.83      32.5 +/-    0.83  0.050 / 0.170
G06     40.3           52.1                9.9 +/-    0.59      12.2 +/-    0.59  0.040 / 0.040
G12     321.8          59.6                9.2 +/-    1.07      10.5 +/-    1.07  0.040 / 0.060
G17     74.5           20.2                9.5 +/-    0.97      20.9 +/-    0.97  0.140 / 0.390
G19     59.8           37.9                9.6 +/-    0.79      14.5 +/-    0.79  0.120 / 0.310
G24     239.3          31.9               13.6 +/-    1.25      23.0 +/-    1.25  0.080 / 0.110
G25     317.3          16.3                8.3 +/-    1.63      20.0 +/-    1.63  0.090 / 0.120