PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-17:58:00
G10     269.4          38.9               11.0 +/-    1.46      16.3 +/-    1.46  0.140 / 0.120
G13     41.4           17.7                9.7 +/-    1.72      22.6 +/-    1.72  0.170 / 0.130
G15     56.1           45.9               10.1 +/-    0.92      13.4 +/-    0.92  0.040 / 0.030
G18     309.2          65.9               10.5 +/-    0.53      11.4 +/-    0.53  0.040 / 0.030
G20     55.4           34.5                9.8 +/-    2.02      15.8 +/-    2.02  0.070 / 0.120
G21     23.9           74.3               10.8 +/-    1.14      11.2 +/-    1.14  0.060 / 0.100
G24     119.5          15.3               13.1 +/-    2.81      32.2 +/-    2.81  0.150 / 0.310
G27     316.7          21.9               10.6 +/-    3.01      22.2 +/-    3.01  0.110 / 0.420
G29     165.8          23.5               13.8 +/-    0.90      27.9 +/-    0.90  0.130 / 0.220