PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-18:42:40
G08     275.9          20.8               13.8 +/-    2.09      29.7 +/-    2.09  0.200 / 0.210
G10     43.3           61.6                9.5 +/-    0.48      10.6 +/-    0.48  0.220 / 0.320
G11     316.7          11.0               -2.8 +/-   14.65      -7.6 +/-   14.65  0.280 / 0.210
G14     250.8          60.6               13.4 +/-    0.67      15.2 +/-    0.67  0.330 / 0.190
G18     84.5           40.0                9.6 +/-    1.21      14.0 +/-    1.21  0.090 / 0.180
G21     151.3          18.4               14.8 +/-    1.31      33.9 +/-    1.31  0.140 / 0.200
G24     44.3           17.0                7.4 +/-    2.48      17.5 +/-    2.48  0.030 / 0.050
G27     237.2          21.1               16.5 +/-    2.55      35.4 +/-    2.55  0.040 / 0.040
G31     181.1          20.5               20.3 +/-    1.28      44.1 +/-    1.28  0.020 / 0.020
G32     300.2          75.7               12.3 +/-    0.69      12.6 +/-    0.69  0.030 / 0.020