PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-23:57:40
G10     251.5          26.5               12.0 +/-    1.41      22.6 +/-    1.41  0.070 / 0.220
G13     53.6           30.7               11.3 +/-    1.50      19.4 +/-    1.50  0.080 / 0.230
G15     87.3           58.1               13.8 +/-    0.48      15.9 +/-    0.48  0.130 / 0.280
G16     296.6          14.5                9.6 +/-    1.30      24.1 +/-    1.30  0.120 / 0.220
G18     269.8          55.8               11.8 +/-    2.11      14.0 +/-    2.11  0.070 / 0.110
G20     44.3           46.5               11.4 +/-    0.64      15.1 +/-    0.64  0.120 / 0.110
G21     335.0          61.2               10.8 +/-    1.18      12.1 +/-    1.18  0.040 / 0.040
G26     268.9          15.0               12.1 +/-    1.21      30.1 +/-    1.21  0.030 / 0.040
G29     164.2          46.1               15.6 +/-    0.82      20.7 +/-    0.82  0.050 / 0.040