PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-08:12:30
G05     51.5           10.5                2.8 +/-    4.56       7.7 +/-    4.56  0.090 / 0.270
G10     240.3          16.6                4.9 +/-    0.89      11.7 +/-    0.89  0.090 / 0.350
G13     68.5           35.8                4.7 +/-    0.88       7.3 +/-    0.88  0.040 / 0.050
G15     111.2          55.5                5.5 +/-    0.53       6.5 +/-    0.53  0.050 / 0.050
G16     309.0          13.9                3.7 +/-    1.67       9.5 +/-    1.67  0.290 / 0.300
G20     5.9            72.7                4.0 +/-    0.67       4.2 +/-    0.67  0.110 / 0.350
G21     320.0          51.9                4.1 +/-    0.50       5.1 +/-    0.50  0.040 / 0.040
G26     280.3          19.7                4.1 +/-    2.12       9.0 +/-    2.12  0.040 / 0.040
G29     159.4          64.6                6.2 +/-    0.23       6.8 +/-    0.23  0.140 / 0.150