PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/01-17:42:50
G08     279.5          22.4                8.9 +/-    1.76      18.5 +/-    1.76  0.090 / 0.170
G10     39.6           60.9                7.3 +/-    0.47       8.2 +/-    0.47  0.090 / 0.160
G14     241.2          52.8               10.3 +/-    2.13      12.6 +/-    2.13  0.040 / 0.080
G20     84.3           41.9                9.0 +/-    0.82      12.7 +/-    0.82  0.050 / 0.090
G21     152.0          27.2               10.0 +/-    0.76      18.7 +/-    0.76  0.030 / 0.040
G24     47.0           19.5                6.8 +/-    0.77      15.2 +/-    0.77  0.020 / 0.030
G27     241.6          24.7                8.9 +/-    1.76      17.5 +/-    1.76  0.110 / 0.230
G31     181.0          17.6               11.8 +/-    1.90      27.5 +/-    1.90  0.110 / 0.260
G32     290.8          76.9                9.3 +/-    0.61       9.5 +/-    0.61  0.070 / 0.150