PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/20-21:43:10
G10     296.8          51.7                7.9 +/-    1.17       9.8 +/-    1.17  0.060 / 0.090
G14     210.1          10.6               -6.4 +/-   21.14     -17.5 +/-   21.14  0.050 / 0.110
G15     47.0           33.6                7.3 +/-    1.02      11.9 +/-    1.02  0.040 / 0.050
G20     351.1          65.4                6.3 +/-    1.69       6.8 +/-    1.69  0.040 / 0.050
G21     94.6           74.4                9.8 +/-    0.45      10.2 +/-    0.45  0.370 / 0.750
G24     95.3           26.0                9.4 +/-    1.04      18.0 +/-    1.04  0.070 / 0.160
G27     302.0          33.3                9.2 +/-    1.00      15.1 +/-    1.00  0.070 / 0.140
G32     210.1          32.5                9.3 +/-    0.88      15.4 +/-    0.88  0.050 / 0.070