PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-15:28:00
G02     75.1           20.1                8.0 +/-    2.13      17.7 +/-    2.13  0.030 / 0.040
G05     45.1           46.5                7.4 +/-    0.66       9.7 +/-    0.66  0.030 / 0.060
G12     178.7          12.3                8.4 +/-    2.77      22.3 +/-    2.77  0.260 / 0.410
G13     109.3          27.1                8.8 +/-    1.41      16.4 +/-    1.41  0.260 / 0.610
G15     151.5          29.4                9.3 +/-    1.62      16.6 +/-    1.62  0.190 / 0.190
G20     228.3          15.9                9.0 +/-    4.24      21.9 +/-    4.24  0.080 / 0.150
G21     287.8          28.6                6.5 +/-    2.02      11.7 +/-    2.02  0.090 / 0.110
G25     216.7          36.3                8.3 +/-    1.05      12.9 +/-    1.05  0.080 / 0.120
G26     314.4          13.8                5.0 +/-    3.99      12.7 +/-    3.99  0.080 / 0.170
G29     343.0          73.2                8.2 +/-    0.33       8.5 +/-    0.33  0.090 / 0.190