PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-20:57:50
G02     51.1           40.3               10.3 +/-    0.68      14.9 +/-    0.68  0.030 / 0.030
G05     76.3           67.6               10.9 +/-    0.71      11.7 +/-    0.71  0.030 / 0.030
G12     183.5          39.5               12.7 +/-    2.41      18.7 +/-    2.41  0.040 / 0.080
G21     263.9          10.8                5.1 +/-   19.02      14.0 +/-   19.02  0.040 / 0.080
G25     251.4          57.0               10.4 +/-    0.70      12.2 +/-    0.70  0.050 / 0.060
G29     321.7          45.0                9.2 +/-    1.09      12.4 +/-    1.09  0.050 / 0.080