PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-17:12:40
G10     297.3          51.4                9.1 +/-    1.02      11.2 +/-    1.02  0.060 / 0.100
G14     210.4          12.5                7.8 +/-   11.17      20.6 +/-   11.17  0.050 / 0.090
G15     45.8           26.5                7.4 +/-    1.18      13.9 +/-    1.18  0.030 / 0.050
G18     3.8            65.6                8.0 +/-    1.03       8.7 +/-    1.03  0.030 / 0.050
G20     70.9           19.9                6.5 +/-    0.72      14.3 +/-    0.72  0.080 / 0.130
G21     105.8          68.7                9.5 +/-    0.44      10.1 +/-    0.44  0.070 / 0.170
G24     98.4           26.7               10.3 +/-    0.76      19.4 +/-    0.76  0.080 / 0.250
G27     298.5          35.2                7.8 +/-    0.92      12.4 +/-    0.92  0.090 / 0.240
G32     211.2          31.5                9.5 +/-    1.94      16.2 +/-    1.94  0.060 / 0.110