PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-15:57:50
G01     313.7          26.9                7.8 +/-    1.09      14.5 +/-    1.09  0.100 / 0.220
G10     95.6           46.7                7.6 +/-    0.62      10.0 +/-    0.62  0.150 / 0.210
G11     294.3          25.7                7.3 +/-    1.32      14.0 +/-    1.32  0.160 / 0.220
G14     329.2          70.1                7.1 +/-    0.51       7.5 +/-    0.51  0.150 / 0.280
G22     306.4          20.0                7.9 +/-    0.96      17.4 +/-    0.96  0.050 / 0.040
G25     91.5           13.6                9.1 +/-    2.19      23.5 +/-    2.19  0.030 / 0.030
G31     171.8          55.4                9.5 +/-    0.56      11.3 +/-    0.56  0.040 / 0.040
G32     26.5           58.5                7.2 +/-    0.92       8.3 +/-    0.92  0.040 / 0.040