PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-14:12:50
G01     321.0          11.0              -12.6 +/-   27.07     -34.3 +/-   27.07  0.170 / 0.320
G08     267.9          16.7                5.4 +/-    1.82      13.0 +/-    1.82  0.160 / 0.390
G10     65.6           57.6                5.9 +/-    0.78       6.8 +/-    0.78  0.040 / 0.040
G11     311.8          16.3                1.9 +/-    2.97       4.6 +/-    2.97  0.030 / 0.040
G14     270.5          66.0                5.9 +/-    0.71       6.4 +/-    0.71  0.160 / 0.310
G21     154.4          11.1                9.3 +/-    1.62      25.3 +/-    1.62  0.160 / 0.390
G27     229.0          13.8                4.0 +/-    2.11      10.2 +/-    2.11  0.050 / 0.070
G31     177.1          34.0                7.4 +/-    0.93      11.9 +/-    0.93  0.050 / 0.070
G32     350.6          72.4                5.7 +/-    0.58       5.9 +/-    0.58  0.170 / 0.260