PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-20:12:30
G08     286.8          23.0               19.5 +/-    0.80      39.9 +/-    0.80  0.100 / 0.080
G10     18.5           63.2               10.6 +/-    0.78      11.7 +/-    0.78  0.090 / 0.110
G14     236.0          52.2               11.3 +/-    2.12      13.9 +/-    2.12  0.050 / 0.100
G18     71.7           47.1                9.3 +/-    1.11      12.2 +/-    1.11  0.060 / 0.100
G21     148.0          30.5               11.5 +/-    1.18      20.0 +/-    1.18  0.070 / 0.230
G24     52.1           23.8                8.3 +/-    2.36      16.6 +/-    2.36  0.070 / 0.180
G27     247.0          28.2               10.6 +/-    1.48      19.3 +/-    1.48  0.020 / 0.030
G32     257.6          70.3                9.8 +/-    0.67      10.4 +/-    0.67  0.030 / 0.020