PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-02:13:00
G02     47.2           42.6                8.9 +/-    0.68      12.4 +/-    0.68  0.030 / 0.060
G05     93.0           68.8               10.2 +/-    0.46      10.9 +/-    0.46  0.030 / 0.060
G12     191.0          52.4               12.5 +/-    1.36      15.3 +/-    1.36  0.040 / 0.040
G25     265.2          58.8               11.3 +/-    0.89      13.0 +/-    0.89  0.030 / 0.040
G29     320.8          44.1               10.5 +/-    1.10      14.3 +/-    1.10  0.040 / 0.050