PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-16:57:30
G08     320.4          11.4               -0.8 +/-   30.67      -2.1 +/-   30.67  0.060 / 0.090
G10     308.9          55.9                7.3 +/-    0.95       8.6 +/-    0.95  0.060 / 0.070
G14     212.2          12.5                8.0 +/-   15.64      21.2 +/-   15.64  0.190 / 0.430
G15     45.4           20.2                7.9 +/-    2.29      17.3 +/-    2.29  0.120 / 0.300
G20     13.2           63.9                7.1 +/-    0.56       7.8 +/-    0.56  0.240 / 0.460
G21     112.1          69.8                8.7 +/-    0.98       9.2 +/-    0.98  0.290 / 0.530
G24     93.0           28.8                8.3 +/-    1.16      15.0 +/-    1.16  0.040 / 0.040
G27     294.0          36.7                6.8 +/-    4.44      10.5 +/-    4.44  0.030 / 0.040
G32     212.3          39.2               10.6 +/-    1.18      15.6 +/-    1.18  0.060 / 0.050