PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-22:42:40
G08     306.9          20.5                8.2 +/-    2.14      17.8 +/-    2.14  0.070 / 0.070
G10     336.2          60.6                6.5 +/-    0.71       7.4 +/-    0.71  0.070 / 0.090
G14     219.1          31.8               11.1 +/-    1.82      18.7 +/-    1.82  0.040 / 0.060
G15     47.2           13.7                6.1 +/-    1.33      15.5 +/-    1.33  0.050 / 0.060
G20     41.0           59.7                8.3 +/-    0.72       9.5 +/-    0.72  0.080 / 0.170
G21     136.1          55.2               10.2 +/-    1.00      12.1 +/-    1.00  0.060 / 0.190
G24     69.2           28.6                8.0 +/-    0.60      14.4 +/-    0.60  0.120 / 0.270
G27     273.7          36.9               10.9 +/-    0.86      16.8 +/-    0.86  0.110 / 0.280
G32     224.9          55.3                9.8 +/-    1.06      11.6 +/-    1.06  0.060 / 0.090