PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-14:13:00
G01     321.0          11.0              -11.2 +/-   30.46     -30.6 +/-   30.46  0.190 / 0.350
G08     267.9          16.7                5.2 +/-    2.54      12.3 +/-    2.54  0.190 / 0.440
G10     65.6           57.6                5.7 +/-    0.63       6.7 +/-    0.63  0.240 / 0.330
G11     311.8          16.3                3.4 +/-    2.16       8.2 +/-    2.16  0.210 / 0.300
G14     270.5          66.0                5.5 +/-    1.02       6.0 +/-    1.02  0.060 / 0.080
G21     154.4          11.1                7.8 +/-    4.32      21.2 +/-    4.32  0.070 / 0.070
G27     229.0          13.8                7.3 +/-    5.48      18.6 +/-    5.48  0.040 / 0.060
G31     177.1          34.0                9.0 +/-    1.04      14.6 +/-    1.04  0.040 / 0.050
G32     350.6          72.4                6.0 +/-    0.54       6.3 +/-    0.54  0.230 / 0.340