PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-23:58:10
G10     251.9          26.8               14.1 +/-    1.54      26.5 +/-    1.54  0.040 / 0.050
G13     53.2           30.5               12.1 +/-    0.84      21.0 +/-    0.84  0.040 / 0.040
G15     86.4           58.0               13.1 +/-    1.02      15.2 +/-    1.02  0.110 / 0.290
G16     296.1          14.4               11.0 +/-    2.20      27.7 +/-    2.20  0.090 / 0.280
G18     270.5          56.1               13.4 +/-    1.10      15.7 +/-    1.10  0.140 / 0.130
G20     44.6           46.1                9.9 +/-    0.44      13.2 +/-    0.44  0.090 / 0.130
G21     335.6          61.5               11.2 +/-    0.93      12.6 +/-    0.93  0.030 / 0.050
G26     268.5          14.9               12.3 +/-    2.71      30.8 +/-    2.71  0.040 / 0.060
G29     164.3          45.6               15.3 +/-    0.60      20.4 +/-    0.60  0.090 / 0.360