PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/18-16:28:00
G10     257.1          32.2                8.1 +/-    2.37      13.6 +/-    2.37  0.060 / 0.050
G13     47.6           25.1                8.2 +/-    2.07      16.1 +/-    2.07  0.060 / 0.060
G15     75.7           56.7                8.8 +/-    0.41      10.4 +/-    0.41  0.100 / 0.300
G16     289.3          14.5                5.8 +/-    1.79      14.6 +/-    1.79  0.080 / 0.260
G20     280.5          55.3                8.7 +/-    2.47      10.3 +/-    2.47  0.040 / 0.040
G21     348.0          66.4                8.0 +/-    0.92       8.7 +/-    0.92  0.040 / 0.030
G26     262.9          12.4                7.9 +/-    2.99      20.8 +/-    2.99  0.100 / 0.090
G29     165.6          41.2                9.6 +/-    1.23      13.6 +/-    1.23  0.090 / 0.080