PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-14:27:30
G02     47.6           42.2                5.3 +/-    0.93       7.4 +/-    0.93  0.030 / 0.030
G05     101.9          71.1                7.4 +/-    0.54       7.8 +/-    0.54  0.030 / 0.030
G12     185.2          47.2                7.7 +/-    0.49      10.1 +/-    0.49  0.050 / 0.060
G25     264.9          58.1               10.2 +/-    0.94      11.8 +/-    0.94  0.040 / 0.060
G29     318.5          40.7                5.6 +/-    0.92       8.1 +/-    0.92  0.040 / 0.040