PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-17:27:20
G02     30.6           56.7                8.2 +/-    0.42       9.7 +/-    0.42  0.030 / 0.040
G05     140.0          62.5               11.7 +/-    1.23      13.0 +/-    1.23  0.030 / 0.040
G06     54.0           14.2                6.5 +/-    2.48      16.5 +/-    2.48  0.040 / 0.050
G12     197.5          67.5                9.0 +/-    0.98       9.7 +/-    0.98  0.040 / 0.060
G25     296.6          53.1                8.8 +/-    0.98      10.7 +/-    0.98  0.090 / 0.280
G29     307.6          28.4                7.3 +/-    1.11      13.3 +/-    1.11  0.090 / 0.240