PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/02-18:58:00
G02     58.9           34.5                9.5 +/-    1.42      15.1 +/-    1.42  0.030 / 0.030
G05     57.2           61.0                9.5 +/-    0.83      10.7 +/-    0.83  0.040 / 0.040
G12     180.8          27.4               10.9 +/-    1.72      20.2 +/-    1.72  0.110 / 0.070
G13     126.8          16.0               12.9 +/-    2.31      31.3 +/-    2.31  0.090 / 0.080
G15     166.3          11.3                2.1 +/-   29.70       5.6 +/-   29.70  0.050 / 0.110
G21     271.8          17.0               10.7 +/-    2.48      25.4 +/-    2.48  0.080 / 0.100
G25     233.0          50.9               10.7 +/-    3.39      13.4 +/-    3.39  0.050 / 0.040
G29     328.0          54.3                9.5 +/-    1.52      11.4 +/-    1.52  0.060 / 0.040