PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-21:58:10
G02     58.7           34.0                9.2 +/-    2.13      14.9 +/-    2.13  0.030 / 0.040
G05     58.2           61.1                8.8 +/-    0.49       9.9 +/-    0.49  0.030 / 0.040
G12     182.4          30.3               12.4 +/-    1.04      21.7 +/-    1.04  0.140 / 0.360
G13     128.1          15.1               12.1 +/-    1.71      30.0 +/-    1.71  0.200 / 0.370
G15     165.7          11.0               -0.3 +/-   26.40      -0.7 +/-   26.40  0.060 / 0.110
G21     270.9          16.4               12.5 +/-    2.10      30.1 +/-    2.10  0.070 / 0.090
G25     236.3          52.0               10.9 +/-    3.13      13.4 +/-    3.13  0.070 / 0.110
G29     327.3          53.2                9.6 +/-    1.49      11.7 +/-    1.49  0.100 / 0.120