PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/16-18:27:40
G02     43.8           46.0                8.9 +/-    0.66      11.9 +/-    0.66  0.030 / 0.030
G05     102.3          69.8               10.4 +/-    0.86      11.1 +/-    0.86  0.020 / 0.030
G12     188.7          52.0                9.9 +/-    0.55      12.2 +/-    0.55  0.060 / 0.080
G25     270.7          58.1               11.2 +/-    0.95      12.9 +/-    0.95  0.060 / 0.090
G29     317.4          39.4                8.6 +/-    1.10      12.7 +/-    1.10  0.060 / 0.070