PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/20-21:43:00
G01     313.2          27.5               10.2 +/-    1.48      18.9 +/-    1.48  0.140 / 0.150
G10     96.3           46.5               11.2 +/-    0.55      14.8 +/-    0.55  0.090 / 0.170
G11     291.1          27.5                9.3 +/-    1.59      17.1 +/-    1.59  0.090 / 0.160
G14     337.6          70.0               10.9 +/-    0.39      11.5 +/-    0.39  0.090 / 0.120
G18     111.8          19.4               11.8 +/-    0.68      26.3 +/-    0.68  0.150 / 0.190
G22     306.1          18.5               10.5 +/-    1.46      23.9 +/-    1.46  0.110 / 0.250
G25     89.4           13.7               12.1 +/-    1.70      31.1 +/-    1.70  0.040 / 0.040
G31     176.0          53.1               13.2 +/-    0.69      16.0 +/-    0.69  0.050 / 0.040
G32     23.8           59.8               10.4 +/-    1.05      11.8 +/-    1.05  0.030 / 0.030