PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-20:42:50
G10     255.8          31.0               11.0 +/-    2.10      18.8 +/-    2.10  0.050 / 0.060
G13     48.6           26.1                8.7 +/-    0.68      16.6 +/-    0.68  0.040 / 0.060
G15     83.3           59.4                9.0 +/-    0.71      10.2 +/-    0.71  0.070 / 0.200
G16     289.2          15.1                6.3 +/-    3.29      15.6 +/-    3.29  0.080 / 0.190
G20     278.2          54.4                8.9 +/-    0.84      10.7 +/-    0.84  0.130 / 0.420
G21     341.8          64.3                7.5 +/-    1.08       8.2 +/-    1.08  0.140 / 0.470
G26     262.2          13.1                9.3 +/-    1.70      24.3 +/-    1.70  0.020 / 0.040
G29     166.2          44.0               10.0 +/-    0.67      13.7 +/-    0.67  0.030 / 0.040