PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-17:27:10
G02     30.6           56.7                7.1 +/-    1.24       8.3 +/-    1.24  0.100 / 0.300
G05     140.0          62.5               10.1 +/-    0.49      11.2 +/-    0.49  0.130 / 0.270
G06     54.0           14.2                7.2 +/-    2.84      18.2 +/-    2.84  0.040 / 0.050
G12     197.5          67.5                7.6 +/-    0.55       8.2 +/-    0.55  0.050 / 0.040
G25     296.6          53.1                8.0 +/-    3.11       9.7 +/-    3.11  0.030 / 0.040
G29     307.6          28.4                7.1 +/-    1.64      12.8 +/-    1.64  0.020 / 0.040