PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/20-16:43:00
G08     270.6          20.3                6.3 +/-    1.49      13.7 +/-    1.49  0.240 / 0.310
G10     55.5           58.3                8.2 +/-    0.60       9.5 +/-    0.60  0.180 / 0.390
G11     317.1          10.6               -3.5 +/-   13.96      -9.6 +/-   13.96  0.050 / 0.040
G14     252.8          59.8                8.0 +/-    0.74       9.1 +/-    0.74  0.050 / 0.060
G20     93.1           36.2                7.4 +/-    1.38      11.5 +/-    1.38  0.160 / 0.290
G21     154.0          18.8                8.8 +/-    3.57      20.0 +/-    3.57  0.120 / 0.230
G24     42.4           14.0                5.9 +/-    3.30      15.1 +/-    3.30  0.090 / 0.240
G27     234.9          19.4                7.9 +/-    4.39      17.6 +/-    4.39  0.170 / 0.260
G31     179.7          24.9                9.7 +/-    1.74      19.0 +/-    1.74  0.030 / 0.030
G32     329.5          76.1                7.8 +/-    0.81       8.0 +/-    0.81  0.030 / 0.030