PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-22:57:30
G02     58.2           34.2                8.7 +/-    0.45      14.0 +/-    0.45  0.030 / 0.040
G05     59.4           61.6                9.9 +/-    1.05      11.1 +/-    1.05  0.030 / 0.040
G12     183.1          31.9               12.4 +/-    1.19      20.8 +/-    1.19  0.050 / 0.110
G13     129.0          14.4               14.8 +/-    2.33      37.4 +/-    2.33  0.040 / 0.120
G15     165.8          10.5               -2.7 +/-   30.61      -7.4 +/-   30.61  0.050 / 0.070
G21     270.1          15.8               12.7 +/-    1.97      30.9 +/-    1.97  0.050 / 0.070
G25     238.4          52.7                9.0 +/-    1.45      11.0 +/-    1.45  0.150 / 0.390
G29     326.7          52.3                9.4 +/-    0.86      11.5 +/-    0.86  0.130 / 0.490