PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-19:12:50
G01     320.5          14.7                5.5 +/-    2.49      13.7 +/-    2.49  0.210 / 0.630
G08     263.5          16.7               12.7 +/-    1.67      30.2 +/-    1.67  0.200 / 0.530
G10     70.6           54.7                8.1 +/-    0.85       9.6 +/-    0.85  0.040 / 0.050
G11     311.1          16.8                8.8 +/-    1.26      21.0 +/-    1.26  0.040 / 0.060
G14     267.9          64.5                9.8 +/-    0.64      10.8 +/-    0.64  0.230 / 0.250
G20     100.8          31.2                7.5 +/-    1.06      12.8 +/-    1.06  0.170 / 0.400
G21     155.7          11.5               10.6 +/-    1.86      28.6 +/-    1.86  0.180 / 0.430
G27     228.6          13.6                9.5 +/-    3.55      24.4 +/-    3.55  0.270 / 0.640
G31     177.2          34.6                9.6 +/-    1.89      15.3 +/-    1.89  0.070 / 0.100
G32     356.7          71.5                9.2 +/-    0.46       9.7 +/-    0.46  0.070 / 0.090