PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-02:57:50
G02     63.2           29.1                7.7 +/-    0.96      13.8 +/-    0.96  0.080 / 0.110
G05     52.4           56.2                9.8 +/-    0.74      11.5 +/-    0.74  0.070 / 0.130
G12     185.4          30.6               10.2 +/-    1.39      17.6 +/-    1.39  0.200 / 0.320
G13     123.8          17.7                9.1 +/-    1.47      21.2 +/-    1.47  0.170 / 0.430
G15     160.5          16.2                8.1 +/-    2.04      19.5 +/-    2.04  0.030 / 0.050
G21     275.6          21.0               10.5 +/-    2.04      22.6 +/-    2.04  0.030 / 0.040
G25     229.8          48.9               10.8 +/-    2.24      13.8 +/-    2.24  0.090 / 0.230
G29     336.1          62.3               10.3 +/-    0.62      11.5 +/-    0.62  0.100 / 0.260