PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/16-19:58:10
G02     56.1           36.5                8.4 +/-    0.99      13.0 +/-    0.99  0.030 / 0.040
G05     62.7           63.7                9.7 +/-    0.65      10.7 +/-    0.65  0.030 / 0.040
G13     129.8          13.5               12.1 +/-    2.30      31.3 +/-    2.30  0.150 / 0.360
G21     268.9          14.7               10.2 +/-    2.10      25.6 +/-    2.10  0.120 / 0.370
G25     239.2          53.6                8.3 +/-    1.04      10.0 +/-    1.04  0.040 / 0.060
G29     325.7          50.8                8.6 +/-    0.68      10.8 +/-    0.68  0.040 / 0.050