PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/05-15:57:30
G10     249.5          25.1               12.3 +/-    1.25      23.9 +/-    1.25  0.110 / 0.220
G13     55.6           31.7                7.7 +/-    1.71      13.0 +/-    1.71  0.150 / 0.260
G15     86.6           56.8               10.8 +/-    1.30      12.7 +/-    1.30  0.070 / 0.050
G16     301.5          13.6                5.5 +/-    2.26      14.1 +/-    2.26  0.050 / 0.040
G18     269.0          56.8               10.0 +/-    1.66      11.6 +/-    1.66  0.130 / 0.380
G20     39.9           51.9                8.6 +/-    0.87      10.7 +/-    0.87  0.100 / 0.370
G21     339.8          62.9                9.5 +/-    0.96      10.6 +/-    0.96  0.040 / 0.030
G26     271.9          15.8                9.8 +/-    1.47      24.0 +/-    1.47  0.050 / 0.040
G29     162.1          46.5               12.8 +/-    0.52      16.9 +/-    0.52  0.060 / 0.140