PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/18-16:28:00
G10     257.1          32.2               10.0 +/-    2.09      16.7 +/-    2.09  0.160 / 0.430
G13     47.6           25.1                7.9 +/-    0.96      15.4 +/-    0.96  0.140 / 0.340
G15     75.7           56.7                8.4 +/-    0.49       9.8 +/-    0.49  0.050 / 0.050
G16     289.3          14.5                6.2 +/-    1.81      15.7 +/-    1.81  0.050 / 0.050
G20     280.5          55.3               10.0 +/-    0.84      11.9 +/-    0.84  0.040 / 0.060
G21     348.0          66.4                6.4 +/-    0.67       6.9 +/-    0.67  0.040 / 0.060
G26     262.9          12.4                6.7 +/-    4.59      17.8 +/-    4.59  0.070 / 0.210
G29     165.6          41.2               10.4 +/-    1.14      14.9 +/-    1.14  0.060 / 0.190