PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/08-15:58:10
G10     254.6          29.3                7.4 +/-    3.19      13.3 +/-    3.19  0.070 / 0.060
G13     50.3           28.2                5.1 +/-    2.56       9.3 +/-    2.56  0.060 / 0.050
G15     75.3           55.0                8.0 +/-    0.50       9.5 +/-    0.50  0.180 / 0.310
G16     295.6          13.5                5.0 +/-    3.17      12.9 +/-    3.17  0.100 / 0.240
G18     279.0          60.3                7.3 +/-    1.45       8.2 +/-    1.45  0.080 / 0.200
G20     44.3           47.0                6.0 +/-    0.91       7.8 +/-    0.91  0.110 / 0.210
G21     350.0          66.8                6.4 +/-    0.71       6.9 +/-    0.71  0.050 / 0.030
G26     266.2          13.5                5.5 +/-    2.23      14.2 +/-    2.23  0.050 / 0.040
G29     163.9          40.1                9.0 +/-    0.91      13.1 +/-    0.91  0.110 / 0.370