PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-15:42:40
G10     267.5          40.1                8.2 +/-    1.34      12.0 +/-    1.34  0.090 / 0.130
G13     41.4           17.0                6.9 +/-    2.00      16.3 +/-    2.00  0.100 / 0.200
G15     57.1           46.2                6.8 +/-    1.10       8.9 +/-    1.10  0.130 / 0.420
G16     278.2          12.8                5.8 +/-    2.06      15.1 +/-    2.06  0.230 / 0.490
G20     302.8          62.0                8.9 +/-    1.23      10.0 +/-    1.23  0.070 / 0.090
G21     4.5            71.6                7.8 +/-    0.72       8.2 +/-    0.72  0.050 / 0.090
G24     122.3          14.0                9.4 +/-    3.32      23.9 +/-    3.32  0.040 / 0.040
G27     318.8          18.8                6.5 +/-    2.70      14.7 +/-    2.70  0.040 / 0.040
G29     167.4          32.5                9.9 +/-    1.51      16.5 +/-    1.51  0.210 / 0.220