PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-18:13:00
G01     313.5          29.1               21.9 +/-    1.59      39.1 +/-    1.59  0.110 / 0.250
G10     95.2           44.6                9.4 +/-    0.74      12.7 +/-    0.74  0.110 / 0.180
G11     296.6          23.8                9.7 +/-    1.96      19.4 +/-    1.96  0.140 / 0.420
G14     316.7          70.1                7.8 +/-    0.39       8.2 +/-    0.39  0.140 / 0.380
G20     114.9          18.2               11.6 +/-    2.05      26.6 +/-    2.05  0.070 / 0.150
G22     306.0          17.1                7.2 +/-    3.29      17.1 +/-    3.29  0.130 / 0.140
G25     91.8           12.5               10.6 +/-    1.58      28.0 +/-    1.58  0.050 / 0.060
G31     173.1          53.0               10.9 +/-    1.11      13.3 +/-    1.11  0.050 / 0.040
G32     26.8           58.6                8.2 +/-    0.43       9.4 +/-    0.43  0.030 / 0.050