PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/03-21:27:50
G01     298.0          37.9                8.7 +/-    2.22      13.1 +/-    2.22  0.060 / 0.090
G03     309.6          11.9                2.8 +/-   25.09       7.4 +/-   25.09  0.060 / 0.080
G10     114.7          34.0               10.3 +/-    1.39      16.6 +/-    1.39  0.120 / 0.150
G11     272.0          27.7                8.1 +/-    1.38      14.9 +/-    1.38  0.070 / 0.160
G14     15.5           61.9                8.1 +/-    0.83       9.0 +/-    0.83  0.030 / 0.030
G22     312.3          32.5                7.5 +/-    2.16      12.5 +/-    2.16  0.020 / 0.020
G25     72.4           18.4                8.0 +/-    1.41      18.3 +/-    1.41  0.050 / 0.030
G31     160.7          73.1               10.2 +/-    0.50      10.6 +/-    0.50  0.040 / 0.040
G32     44.2           47.1                6.8 +/-    0.67       9.0 +/-    0.67  0.090 / 0.100