PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/21-19:57:50
G10     272.2          42.4               11.6 +/-    1.42      16.2 +/-    1.42  0.040 / 0.040
G13     39.7           13.9                7.3 +/-    3.76      18.7 +/-    3.76  0.040 / 0.040
G15     55.1           45.6                9.4 +/-    1.06      12.6 +/-    1.06  0.190 / 0.370
G16     274.6          11.2                5.5 +/-   13.64      15.0 +/-   13.64  0.250 / 0.340
G20     308.5          62.6               10.2 +/-    0.60      11.3 +/-    0.60  0.050 / 0.050
G21     12.2           73.7               11.3 +/-    0.56      11.7 +/-    0.56  0.050 / 0.050
G24     118.6          16.5               13.1 +/-    1.81      31.5 +/-    1.81  0.190 / 0.510
G27     316.9          21.8                9.6 +/-    2.22      20.3 +/-    2.22  0.310 / 0.260
G29     167.8          27.6               13.1 +/-    0.98      24.2 +/-    0.98  0.280 / 0.250
G32     204.5          13.2               14.0 +/-    2.78      36.3 +/-    2.78  0.150 / 0.160