PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-10:28:00
G05     51.4           10.8                4.0 +/-    4.41      11.0 +/-    4.41  0.250 / 0.260
G10     240.3          16.5                3.6 +/-    1.73       8.6 +/-    1.73  0.310 / 0.240
G13     68.7           36.0                5.5 +/-    1.02       8.6 +/-    1.02  0.060 / 0.040
G15     110.7          55.4                8.0 +/-    1.10       9.4 +/-    1.10  0.050 / 0.040
G16     309.9          13.4                2.5 +/-    1.24       6.5 +/-    1.24  0.070 / 0.050
G20     25.1           66.0                4.7 +/-    0.61       5.1 +/-    0.61  0.040 / 0.050
G21     321.1          52.8                4.7 +/-    0.86       5.8 +/-    0.86  0.110 / 0.250
G26     281.2          19.6                4.3 +/-    1.49       9.6 +/-    1.49  0.080 / 0.220
G29     158.8          63.5                8.7 +/-    0.57       9.6 +/-    0.57  0.050 / 0.090