PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/19-19:57:10
G02     35.1           53.2                8.5 +/-    1.25      10.4 +/-    1.25  0.090 / 0.210
G05     131.2          65.2                9.8 +/-    0.43      10.6 +/-    0.43  0.080 / 0.130
G06     55.6           12.6                7.3 +/-    2.78      19.1 +/-    2.78  0.040 / 0.060
G12     196.7          65.0                9.0 +/-    0.43       9.8 +/-    0.43  0.040 / 0.070
G25     291.8          55.0                9.3 +/-    1.29      11.1 +/-    1.29  0.050 / 0.050
G29     310.2          31.4                8.2 +/-    1.06      14.0 +/-    1.06  0.060 / 0.060