PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-00:27:40
G10     269.9          41.0                9.3 +/-    0.83      13.4 +/-    0.83  0.040 / 0.050
G13     40.5           15.6                7.7 +/-    2.39      18.9 +/-    2.39  0.040 / 0.040
G15     56.5           46.6                8.1 +/-    0.96      10.7 +/-    0.96  0.170 / 0.190
G16     277.7          11.7                9.6 +/-    2.40      25.7 +/-    2.40  0.140 / 0.260
G20     301.6          60.9                9.0 +/-    0.68      10.1 +/-    0.68  0.080 / 0.060
G21     7.2            72.7                9.6 +/-    0.92      10.0 +/-    0.92  0.090 / 0.060
G24     119.3          15.5               10.6 +/-    2.13      26.0 +/-    2.13  0.150 / 0.390
G27     318.1          19.9                7.0 +/-    1.34      15.3 +/-    1.34  0.120 / 0.250
G29     167.0          28.3               12.3 +/-    1.20      22.4 +/-    1.20  0.050 / 0.040