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               12.9 +/-    1.10      21.2 +/-    1.10  0.160 / 0.470
G13     46.2           24.6               10.4 +/-    1.57      20.5 +/-    1.57  0.160 / 0.410
G15     69.2           54.4               10.9 +/-    0.28      13.1 +/-    0.28  0.050 / 0.100
G16     287.3          13.1                9.6 +/-    2.07      25.1 +/-    2.07  0.060 / 0.100
G18     286.2          61.2               11.3 +/-    0.96      12.7 +/-    0.96  0.030 / 0.040
G20     50.7           38.7                9.2 +/-    0.43      13.6 +/-    0.43  0.040 / 0.050
G21     349.8          67.9                9.8 +/-    0.50      10.4 +/-    0.50  0.150 / 0.310
G26     260.3          10.9               11.9 +/-    2.39      32.7 +/-    2.39  0.150 / 0.340
G27     320.3          15.2                8.7 +/-    1.93      21.4 +/-    1.93  0.030 / 0.070
G29     166.1          35.4               12.6 +/-    0.41      19.8 +/-    0.41  0.040 / 0.110