PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/18-15:57:40
G10     245.5          22.7                8.8 +/-    2.45      18.1 +/-    2.45  0.130 / 0.490
G13     59.5           32.6                7.9 +/-    0.64      13.2 +/-    0.64  0.120 / 0.410
G15     103.7          58.4                9.4 +/-    0.41      10.9 +/-    0.41  0.040 / 0.070
G16     302.6          15.0                3.9 +/-    3.00       9.8 +/-    3.00  0.040 / 0.060
G20     262.0          46.7               10.4 +/-    0.80      13.7 +/-    0.80  0.040 / 0.060
G21     329.3          57.3                6.9 +/-    0.50       8.0 +/-    0.50  0.030 / 0.040
G26     275.6          17.4                7.1 +/-    1.48      16.6 +/-    1.48  0.070 / 0.120
G29     161.7          56.3               10.3 +/-    0.77      12.2 +/-    0.77  0.050 / 0.140