PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/17-16:57:30
G10     305.8          55.1               24.2 +/-    1.22      28.7 +/-    1.22  0.090 / 0.070
G14     211.7          10.8               -6.8 +/-   16.18     -18.7 +/-   16.18  0.070 / 0.070
G15     45.4           21.9                5.9 +/-    2.65      12.4 +/-    2.65  0.150 / 0.330
G20     9.0            64.3                8.2 +/-    0.60       9.0 +/-    0.60  0.180 / 0.420
G21     107.7          71.2                8.8 +/-    1.48       9.3 +/-    1.48  0.040 / 0.040
G24     95.1           28.2                8.3 +/-    0.60      15.1 +/-    0.60  0.040 / 0.040
G27     296.2          36.1               11.1 +/-    1.88      17.3 +/-    1.88  0.050 / 0.030
G32     211.4          37.4               10.9 +/-    1.14      16.5 +/-    1.14  0.040 / 0.030