PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-20:28:00
G01     312.5          28.3                8.2 +/-    1.43      14.9 +/-    1.43  0.120 / 0.160
G10     97.8           45.6                9.4 +/-    0.92      12.6 +/-    0.92  0.090 / 0.240
G11     290.3          27.4                8.2 +/-    1.34      15.1 +/-    1.34  0.110 / 0.290
G14     339.9          69.6                8.9 +/-    0.42       9.4 +/-    0.42  0.260 / 0.290
G18     112.8          18.2               10.8 +/-    1.15      24.8 +/-    1.15  0.030 / 0.030
G22     306.7          19.6                7.5 +/-    2.16      16.6 +/-    2.16  0.030 / 0.040
G25     88.7           14.2               10.7 +/-    3.10      27.0 +/-    3.10  0.030 / 0.030
G31     174.4          55.4               11.6 +/-    0.64      13.8 +/-    0.64  0.050 / 0.020
G32     26.4           58.4                8.3 +/-    0.92       9.6 +/-    0.92  0.110 / 0.110