PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-17:12:50
G01     321.0          11.6               -9.7 +/-   35.48     -26.0 +/-   35.48  0.140 / 0.390
G08     262.3          17.0                8.1 +/-    1.59      19.2 +/-    1.59  0.130 / 0.310
G10     67.5           56.4                7.8 +/-    0.71       9.1 +/-    0.71  0.120 / 0.310
G11     308.5          20.0                7.7 +/-    1.51      17.0 +/-    1.51  0.140 / 0.330
G14     275.4          68.7                9.3 +/-    0.60       9.9 +/-    0.60  0.060 / 0.040
G18     309.0          37.8                5.7 +/-    1.59       8.6 +/-    1.59  0.060 / 0.050
G20     98.5           34.3                8.7 +/-    0.62      13.9 +/-    0.62  0.030 / 0.030
G27     232.1          14.6                8.9 +/-    1.76      22.3 +/-    1.76  0.030 / 0.030
G31     181.1          29.6               12.4 +/-    1.58      21.9 +/-    1.58  0.150 / 0.230
G32     343.7          73.1                9.2 +/-    0.54       9.6 +/-    0.54  0.120 / 0.220