PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-23:58:10
G10     260.3          33.1               12.6 +/-    2.13      20.7 +/-    2.13  0.120 / 0.410
G13     46.2           24.6                9.0 +/-    2.09      17.7 +/-    2.09  0.110 / 0.300
G15     69.2           54.4               11.3 +/-    0.53      13.6 +/-    0.53  0.100 / 0.090
G16     287.3          13.1                9.4 +/-    1.17      24.5 +/-    1.17  0.050 / 0.090
G18     286.2          61.2               11.7 +/-    1.09      13.1 +/-    1.09  0.040 / 0.030
G20     50.7           38.7                9.7 +/-    1.21      14.4 +/-    1.21  0.030 / 0.040
G21     349.8          67.9               10.6 +/-    0.63      11.3 +/-    0.63  0.200 / 0.250
G26     260.3          10.9               12.6 +/-    5.09      34.4 +/-    5.09  0.260 / 0.320
G27     320.3          15.2                7.1 +/-    1.79      17.7 +/-    1.79  0.070 / 0.070
G29     166.1          35.4               12.9 +/-    1.08      20.4 +/-    1.08  0.060 / 0.070