PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-21:12:40
G02     62.3           31.5               12.9 +/-    0.62      21.9 +/-    0.62  0.060 / 0.140
G05     55.5           61.7               12.6 +/-    0.92      14.1 +/-    0.92  0.050 / 0.130
G12     183.8          27.0               17.0 +/-    1.85      31.7 +/-    1.85  0.050 / 0.080
G13     126.1          18.3               18.4 +/-    2.31      42.2 +/-    2.31  0.040 / 0.060
G15     162.4          14.8               21.5 +/-    1.69      53.8 +/-    1.69  0.100 / 0.300
G20     209.8          66.6               17.3 +/-    0.77      18.7 +/-    0.77  0.100 / 0.260
G21     274.8          20.5               14.7 +/-    2.99      32.1 +/-    2.99  0.020 / 0.040
G25     223.7          46.8               15.3 +/-    1.31      20.1 +/-    1.31  0.020 / 0.040
G29     333.6          61.6               14.4 +/-    0.66      16.2 +/-    0.66  0.030 / 0.050