PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-21:12:50
G01     320.4          14.9                9.0 +/-    1.14      22.4 +/-    1.14  0.200 / 0.340
G08     264.1          16.4               11.1 +/-    1.90      26.8 +/-    1.90  0.230 / 0.420
G10     71.4           54.5                9.3 +/-    0.47      11.2 +/-    0.47  0.200 / 0.380
G11     310.1          17.8               10.8 +/-    1.93      25.0 +/-    1.93  0.190 / 0.450
G14     271.0          65.8               10.5 +/-    0.58      11.4 +/-    0.58  0.130 / 0.380
G20     101.0          31.5               11.3 +/-    1.20      19.2 +/-    1.20  0.210 / 0.380
G21     156.0          11.5               11.1 +/-    1.77      30.0 +/-    1.77  0.050 / 0.060
G27     228.3          13.2               14.0 +/-    4.31      36.5 +/-    4.31  0.040 / 0.060
G31     176.5          35.9               12.3 +/-    1.76      19.2 +/-    1.76  0.200 / 0.520
G32     356.9          71.3               10.5 +/-    0.38      11.1 +/-    0.38  0.200 / 0.340