PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-18:58:00
G01     317.5          21.8                9.0 +/-    2.83      19.0 +/-    2.83  0.090 / 0.200
G08     251.5          10.9                9.8 +/-    1.36      26.7 +/-    1.36  0.110 / 0.200
G10     86.8           49.9                9.9 +/-    0.73      12.5 +/-    0.73  0.340 / 0.240
G11     297.6          25.7                9.4 +/-    1.51      18.0 +/-    1.51  0.200 / 0.190
G14     313.2          71.5                8.8 +/-    0.56       9.3 +/-    0.56  0.040 / 0.030
G18     297.4          46.0                9.0 +/-    8.21      11.9 +/-    8.21  0.030 / 0.030
G20     109.2          25.7                8.8 +/-    1.05      16.9 +/-    1.05  0.140 / 0.280
G22     303.0          13.2                8.5 +/-    3.78      22.1 +/-    3.78  0.130 / 0.290
G31     178.1          43.9               11.5 +/-    0.87      15.7 +/-    0.87  0.050 / 0.040
G32     13.8           64.8                8.2 +/-    0.53       8.9 +/-    0.53  0.050 / 0.040