PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-19:58:00
G08     295.8          22.8               11.2 +/-    1.37      23.0 +/-    1.37  0.080 / 0.100
G10     359.1          62.8               10.4 +/-    0.66      11.6 +/-    0.66  0.060 / 0.090
G14     227.7          44.5               12.9 +/-    3.04      17.5 +/-    3.04  0.050 / 0.100
G18     60.9           51.8               10.9 +/-    0.50      13.5 +/-    0.50  0.040 / 0.100
G21     143.9          39.1               15.5 +/-    1.27      22.8 +/-    1.27  0.050 / 0.080
G24     60.0           27.7               10.8 +/-    0.50      19.8 +/-    0.50  0.060 / 0.110
G27     256.0          32.9               12.0 +/-    1.12      19.9 +/-    1.12  0.030 / 0.040
G32     239.8          63.4               13.3 +/-    0.48      14.7 +/-    0.48  0.030 / 0.040