PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/08-15:13:00
G02     53.3           37.6                5.4 +/-    2.08       8.2 +/-    2.08  0.020 / 0.040
G05     76.9           69.1                7.5 +/-    0.47       8.0 +/-    0.47  0.020 / 0.040
G12     184.1          39.4                8.6 +/-    1.02      12.6 +/-    1.02  0.050 / 0.070
G13     132.1          10.1               -1.2 +/-   24.09      -3.4 +/-   24.09  0.040 / 0.090
G21     265.7          12.2                7.8 +/-    5.06      20.8 +/-    5.06  0.050 / 0.060
G25     250.2          56.2                6.9 +/-    1.95       8.1 +/-    1.95  0.050 / 0.060
G29     323.3          47.0                6.9 +/-    1.06       9.0 +/-    1.06  0.270 / 0.490