PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-19:27:50
G08     270.1          19.1                7.2 +/-    2.87      16.1 +/-    2.87  0.140 / 0.170
G10     54.7           60.0                7.4 +/-    0.79       8.4 +/-    0.79  0.160 / 0.180
G11     313.6          15.0                6.8 +/-    2.36      16.8 +/-    2.36  0.090 / 0.140
G14     261.3          64.7                9.3 +/-    0.87      10.1 +/-    0.87  0.250 / 0.180
G18     90.0           36.7                8.2 +/-    1.26      12.6 +/-    1.26  0.080 / 0.120
G21     152.5          13.2                9.0 +/-    2.41      23.3 +/-    2.41  0.080 / 0.110
G24     41.4           13.2                5.8 +/-    3.92      15.0 +/-    3.92  0.020 / 0.020
G27     232.8          17.4                9.3 +/-    2.37      21.8 +/-    2.37  0.020 / 0.020
G31     180.3          25.8                9.5 +/-    1.97      18.3 +/-    1.97  0.120 / 0.290
G32     323.3          75.2                8.4 +/-    0.46       8.6 +/-    0.46  0.110 / 0.310