PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-18:13:10
G02     60.8           31.9               18.8 +/-    1.63      31.7 +/-    1.63  0.050 / 0.110
G05     59.5           63.8               20.3 +/-    0.85      22.3 +/-    0.85  0.050 / 0.110
G12     185.3          31.3               25.3 +/-    2.76      43.1 +/-    2.76  0.110 / 0.240
G13     128.7          16.1               30.4 +/-    2.29      73.6 +/-    2.29  0.110 / 0.200
G15     162.9          13.1               33.4 +/-    1.68      86.9 +/-    1.68  0.040 / 0.070
G20     208.5          61.9               26.8 +/-    0.37      29.9 +/-    0.37  0.040 / 0.060
G21     272.9          19.7               16.2 +/-    1.31      36.0 +/-    1.31  0.030 / 0.040
G25     230.3          50.1               23.8 +/-    1.36      30.0 +/-    1.36  0.030 / 0.040
G29     333.4          60.3               16.7 +/-    1.33      18.9 +/-    1.33  0.100 / 0.240