PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-17:27:50
G05     53.4           9.8                 8.0 +/-    3.70      22.3 +/-    3.70  0.120 / 0.350
G10     245.4          22.6               10.4 +/-    2.66      21.5 +/-    2.66  0.120 / 0.400
G13     59.6           32.7                7.0 +/-    0.90      11.7 +/-    0.90  0.040 / 0.050
G15     105.8          58.6                9.3 +/-    0.75      10.7 +/-    0.75  0.040 / 0.050
G16     302.0          15.3                7.1 +/-    1.82      17.5 +/-    1.82  0.160 / 0.370
G20     261.9          46.6               10.2 +/-    4.49      13.4 +/-    4.49  0.210 / 0.360
G21     328.1          56.7                9.3 +/-    0.43      10.9 +/-    0.43  0.060 / 0.130
G26     274.8          17.6                9.1 +/-    2.60      21.2 +/-    2.60  0.070 / 0.100
G29     162.1          57.0               10.5 +/-    0.51      12.2 +/-    0.51  0.030 / 0.040