PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-15:28:00
G10     256.7          33.3                8.0 +/-    1.60      13.0 +/-    1.60  0.110 / 0.430
G13     47.5           24.5                6.1 +/-    1.33      12.1 +/-    1.33  0.160 / 0.550
G15     70.2           53.2                7.7 +/-    0.55       9.4 +/-    0.55  0.160 / 0.570
G16     288.3          15.3                5.6 +/-    2.41      13.8 +/-    2.41  0.040 / 0.050
G20     283.1          57.1                9.0 +/-    0.69      10.5 +/-    0.69  0.040 / 0.050
G21     344.2          64.8                6.0 +/-    0.77       6.5 +/-    0.77  0.080 / 0.120
G26     262.3          12.7                8.2 +/-    1.49      21.5 +/-    1.49  0.090 / 0.140
G27     322.2          10.3              -14.4 +/-   20.39     -40.0 +/-   20.39  0.030 / 0.060
G29     165.6          43.8                9.9 +/-    1.04      13.6 +/-    1.04  0.040 / 0.060