PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-15:42:40
G10     250.0          25.5                7.7 +/-    1.44      14.8 +/-    1.44  0.130 / 0.230
G13     55.0           31.3                4.9 +/-    1.63       8.4 +/-    1.63  0.220 / 0.430
G15     85.3           56.7                6.5 +/-    1.07       7.6 +/-    1.07  0.040 / 0.050
G16     300.7          13.7                3.9 +/-    3.17      10.0 +/-    3.17  0.040 / 0.040
G18     270.1          57.3                7.0 +/-    1.62       8.1 +/-    1.62  0.140 / 0.380
G20     40.3           51.5                5.7 +/-    0.79       7.1 +/-    0.79  0.080 / 0.390
G21     341.2          63.4                5.6 +/-    0.93       6.2 +/-    0.93  0.040 / 0.030
G26     271.1          15.6                6.3 +/-    1.52      15.3 +/-    1.52  0.050 / 0.030
G29     162.4          46.0                7.8 +/-    0.44      10.3 +/-    0.44  0.060 / 0.110