PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-18:43:10
G01     317.8          21.1                7.8 +/-    3.35      16.6 +/-    3.35  0.150 / 0.270
G08     252.2          11.3                8.3 +/-    2.50      22.6 +/-    2.50  0.090 / 0.260
G10     85.7           50.4                7.8 +/-    0.70       9.8 +/-    0.70  0.040 / 0.040
G11     298.4          25.4                9.4 +/-    1.53      18.3 +/-    1.53  0.030 / 0.040
G14     310.8          71.5                7.2 +/-    0.92       7.5 +/-    0.92  0.050 / 0.030
G18     298.3          45.6                7.1 +/-    0.99       9.5 +/-    0.99  0.050 / 0.040
G20     108.5          26.3                9.2 +/-    1.10      17.5 +/-    1.10  0.080 / 0.220
G22     302.7          12.7                8.5 +/-    2.56      22.3 +/-    2.56  0.080 / 0.190
G31     178.5          42.9                9.6 +/-    1.16      13.3 +/-    1.16  0.140 / 0.280
G32     12.3           65.5                7.0 +/-    0.77       7.7 +/-    0.77  0.130 / 0.320