PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-15:12:50
G10     242.4          18.5                5.7 +/-    2.45      13.0 +/-    2.45  0.040 / 0.060
G13     65.5           35.5                5.3 +/-    0.82       8.4 +/-    0.82  0.030 / 0.040
G15     105.2          56.3                7.5 +/-    0.49       8.8 +/-    0.49  0.030 / 0.040
G16     309.9          12.6                5.0 +/-    1.34      13.1 +/-    1.34  0.030 / 0.040
G18     256.4          50.9                6.2 +/-    0.72       7.8 +/-    0.72  0.110 / 0.220
G20     32.4           60.3                3.8 +/-    0.35       4.3 +/-    0.35  0.120 / 0.270
G21     328.1          57.2                4.2 +/-    0.75       4.9 +/-    0.75  0.050 / 0.120
G26     280.7          18.4                5.4 +/-    1.25      12.3 +/-    1.25  0.050 / 0.120
G29     158.7          57.1                7.0 +/-    0.77       8.2 +/-    0.77  0.110 / 0.340