PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-02:58:00
G02     64.5           28.2                6.3 +/-    1.73      11.4 +/-    1.73  0.080 / 0.150
G05     51.3           54.7                7.8 +/-    0.69       9.3 +/-    0.69  0.090 / 0.140
G12     183.6          26.7                9.9 +/-    1.61      18.6 +/-    1.61  0.030 / 0.040
G13     124.0          18.9               10.8 +/-    1.45      24.5 +/-    1.45  0.030 / 0.030
G15     160.7          16.6               10.4 +/-    2.25      24.9 +/-    2.25  0.190 / 0.360
G20     220.4          23.3               12.1 +/-    2.37      24.5 +/-    2.37  0.180 / 0.300
G21     275.6          20.4                8.4 +/-    1.18      18.3 +/-    1.18  0.070 / 0.090
G25     230.6          48.0               10.7 +/-    2.89      13.8 +/-    2.89  0.080 / 0.070
G29     331.3          59.2                9.6 +/-    0.41      11.0 +/-    0.41  0.500 / 0.440