PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-23:12:30
G08     293.5          23.5                8.1 +/-    0.97      16.5 +/-    0.97  0.050 / 0.120
G10     4.9            62.9                7.7 +/-    0.71       8.5 +/-    0.71  0.080 / 0.120
G14     228.4          44.4               11.9 +/-    1.21      16.2 +/-    1.21  0.040 / 0.090
G20     63.2           53.1                8.3 +/-    0.74      10.2 +/-    0.74  0.040 / 0.100
G21     145.8          41.8               10.8 +/-    0.73      15.3 +/-    0.73  0.070 / 0.080
G24     55.4           24.5                7.7 +/-    0.63      15.2 +/-    0.63  0.070 / 0.080
G27     257.2          32.4                9.4 +/-    1.51      15.7 +/-    1.51  0.080 / 0.190
G32     243.9          67.8                8.9 +/-    0.66       9.6 +/-    0.66  0.090 / 0.150