PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-22:12:40
G08     274.0          20.9               11.9 +/-    1.21      25.6 +/-    1.21  0.060 / 0.140
G10     44.3           61.5               10.6 +/-    0.37      11.8 +/-    0.37  0.070 / 0.160
G11     315.7          12.6               10.2 +/-    1.34      26.9 +/-    1.34  0.090 / 0.200
G14     252.7          62.1               11.7 +/-    0.90      13.0 +/-    0.90  0.090 / 0.220
G18     84.4           40.6               12.3 +/-    0.82      17.7 +/-    0.82  0.110 / 0.230
G21     152.0          20.0               13.8 +/-    2.57      30.4 +/-    2.57  0.110 / 0.330
G24     44.0           16.8                9.0 +/-    2.19      21.4 +/-    2.19  0.020 / 0.030
G27     236.5          20.7               14.8 +/-    1.71      32.0 +/-    1.71  0.020 / 0.030
G31     182.8          18.9               13.3 +/-    3.19      30.0 +/-    3.19  0.050 / 0.050
G32     296.2          75.0               11.7 +/-    0.69      12.1 +/-    0.69  0.040 / 0.060