PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/18-21:13:00
G08     291.8          23.7                8.1 +/-    1.03      16.3 +/-    1.03  0.060 / 0.120
G10     8.0            63.0                7.9 +/-    0.59       8.7 +/-    0.59  0.070 / 0.100
G14     229.6          46.2                8.9 +/-    0.94      11.8 +/-    0.94  0.040 / 0.080
G18     317.6          11.1               -4.5 +/-   23.65     -12.3 +/-   23.65  0.040 / 0.110
G20     65.2           52.3                8.8 +/-    0.69      10.8 +/-    0.69  0.070 / 0.090
G21     146.4          39.7               10.4 +/-    1.21      15.3 +/-    1.21  0.080 / 0.100
G24     53.7           23.4                9.1 +/-    0.76      18.4 +/-    0.76  0.090 / 0.270
G27     256.3          31.8                9.2 +/-    1.21      15.5 +/-    1.21  0.130 / 0.230
G32     246.0          68.3                9.7 +/-    1.04      10.4 +/-    1.04  0.070 / 0.130