PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-18:57:50
G01     320.7          13.6               -7.6 +/-   37.85     -19.4 +/-   37.85  0.150 / 0.210
G08     264.5          17.3               12.8 +/-    2.11      30.0 +/-    2.11  0.110 / 0.250
G10     68.5           55.3               10.0 +/-    1.67      11.9 +/-    1.67  0.040 / 0.040
G11     312.0          16.1                9.5 +/-    3.37      23.0 +/-    3.37  0.050 / 0.060
G14     265.2          63.6               11.5 +/-    0.82      12.7 +/-    0.82  0.110 / 0.180
G20     99.7           31.9               10.2 +/-    0.85      17.1 +/-    0.85  0.130 / 0.200
G21     155.5          12.6               11.1 +/-    1.66      29.2 +/-    1.66  0.180 / 0.310
G27     229.4          14.4               13.5 +/-    1.76      33.9 +/-    1.76  0.240 / 0.400
G31     177.5          33.2               11.2 +/-    2.08      18.3 +/-    2.08  0.030 / 0.030
G32     353.6          72.3                9.4 +/-    0.63       9.8 +/-    0.63  0.030 / 0.030