PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-17:28:10
G10     249.9          25.3               12.5 +/-    1.09      24.3 +/-    1.09  0.050 / 0.040
G13     55.3           31.6                9.8 +/-    1.04      16.6 +/-    1.04  0.040 / 0.040
G15     86.3           56.9               11.3 +/-    1.00      13.3 +/-    1.00  0.040 / 0.050
G16     302.3          13.1                3.2 +/-    2.10       8.3 +/-    2.10  0.040 / 0.040
G18     269.2          56.7               11.0 +/-    1.28      12.9 +/-    1.28  0.100 / 0.210
G20     40.9           50.7                9.6 +/-    0.80      12.0 +/-    0.80  0.130 / 0.280
G21     338.3          62.4                9.9 +/-    0.58      11.1 +/-    0.58  0.210 / 0.370
G26     272.5          15.5               10.5 +/-    2.24      25.8 +/-    2.24  0.150 / 0.460
G29     161.7          44.9               13.1 +/-    0.51      17.6 +/-    0.51  0.060 / 0.120