PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/05-21:28:00
G10     255.8          31.0               15.2 +/-    2.03      26.2 +/-    2.03  0.040 / 0.050
G13     48.6           26.1               10.0 +/-    0.66      19.1 +/-    0.66  0.040 / 0.050
G15     83.2           59.3               12.9 +/-    0.65      14.8 +/-    0.65  0.130 / 0.560
G16     289.1          15.1                9.8 +/-    1.53      24.4 +/-    1.53  0.150 / 0.470
G20     278.1          54.4               13.1 +/-    0.65      15.7 +/-    0.65  0.060 / 0.190
G21     341.4          64.1                9.8 +/-    0.99      10.7 +/-    0.99  0.060 / 0.170
G26     262.0          13.1               12.5 +/-    1.60      32.5 +/-    1.60  0.020 / 0.050
G29     166.4          44.1               13.7 +/-    0.67      18.8 +/-    0.67  0.020 / 0.040