PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/16-14:42:40
G02     59.4           32.3                5.4 +/-    1.02       9.0 +/-    1.02  0.040 / 0.040
G05     61.7           63.7                6.8 +/-    0.32       7.5 +/-    0.32  0.030 / 0.040
G12     186.5          35.0                9.5 +/-    1.06      15.0 +/-    1.06  0.050 / 0.070
G13     130.6          14.2               12.7 +/-    3.12      32.1 +/-    3.12  0.060 / 0.100
G15     163.6          11.5               10.5 +/-   11.66      28.3 +/-   11.66  0.050 / 0.060
G20     207.9          57.1                9.3 +/-    0.93      10.9 +/-    0.93  0.050 / 0.050
G21     271.5          19.9                6.2 +/-    0.92      13.6 +/-    0.92  0.110 / 0.220
G25     237.1          52.5                6.9 +/-    0.56       8.5 +/-    0.56  0.090 / 0.240
G29     332.5          58.6                3.9 +/-    0.55       4.5 +/-    0.55  0.040 / 0.060