PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/12-18:42:10
G02     43.4           46.3                7.3 +/-    0.39       9.6 +/-    0.39  0.040 / 0.050
G05     103.9          69.7                9.7 +/-    0.91      10.3 +/-    0.91  0.040 / 0.050
G12     189.0          52.8                9.1 +/-    1.84      11.1 +/-    1.84  0.040 / 0.050
G25     272.0          58.1                9.1 +/-    0.60      10.5 +/-    0.60  0.040 / 0.060
G29     317.0          39.0                8.5 +/-    0.95      12.6 +/-    0.95  0.060 / 0.080