PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-17:28:00
G01     320.6          13.9                2.4 +/-   17.78       6.1 +/-   17.78  0.130 / 0.230
G08     263.7          17.3                9.5 +/-    1.69      22.2 +/-    1.69  0.260 / 0.290
G10     68.6           55.2                8.1 +/-    0.71       9.7 +/-    0.71  0.050 / 0.060
G11     312.5          15.5                5.4 +/-    2.76      13.2 +/-    2.76  0.050 / 0.070
G14     266.3          64.4                6.4 +/-    1.10       7.1 +/-    1.10  0.090 / 0.390
G20     100.0          31.4                9.4 +/-    1.13      16.1 +/-    1.13  0.140 / 0.400
G21     155.4          11.9                9.0 +/-    2.02      24.0 +/-    2.02  0.100 / 0.230
G27     229.3          14.4               10.3 +/-    3.41      25.9 +/-    3.41  0.110 / 0.220
G31     178.1          32.7                9.3 +/-    1.60      15.5 +/-    1.60  0.150 / 0.310
G32     354.4          72.2                8.6 +/-    0.36       9.0 +/-    0.36  0.190 / 0.370