PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-18:58:00
G01     317.4          21.2               10.0 +/-    3.06      21.4 +/-    3.06  0.220 / 0.280
G08     254.3          11.0               13.2 +/-    2.71      36.1 +/-    2.71  0.210 / 0.290
G10     85.5           51.4               11.1 +/-    0.75      13.7 +/-    0.75  0.050 / 0.050
G11     300.2          24.3                8.4 +/-    1.27      16.6 +/-    1.27  0.050 / 0.040
G14     310.1          71.0               11.1 +/-    0.73      11.7 +/-    0.73  0.270 / 0.260
G18     106.0          24.5               11.4 +/-    1.15      22.5 +/-    1.15  0.240 / 0.280
G22     302.5          13.1                8.7 +/-    5.13      22.6 +/-    5.13  0.050 / 0.030
G25     97.6           10.3                7.6 +/-   32.24      21.1 +/-   32.24  0.060 / 0.030
G31     176.3          45.6               13.1 +/-    0.79      17.5 +/-    0.79  0.030 / 0.020
G32     13.7           64.8               10.1 +/-    0.52      11.1 +/-    0.52  0.050 / 0.030