PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-21:57:40
G10     251.0          26.1               13.3 +/-    1.66      25.4 +/-    1.66  0.140 / 0.180
G13     54.4           31.3               12.9 +/-    1.73      21.9 +/-    1.73  0.060 / 0.110
G15     86.5           57.6               14.8 +/-    0.75      17.1 +/-    0.75  0.040 / 0.040
G16     298.3          14.1               10.1 +/-    2.16      25.8 +/-    2.16  0.040 / 0.040
G18     269.7          56.2               12.0 +/-    2.02      14.1 +/-    2.02  0.110 / 0.310
G20     43.4           47.6               13.1 +/-    0.97      17.0 +/-    0.97  0.110 / 0.340
G21     335.5          61.4               13.4 +/-    1.21      15.0 +/-    1.21  0.070 / 0.050
G26     270.6          15.1               12.8 +/-    1.86      31.8 +/-    1.86  0.080 / 0.050
G29     163.3          45.5               13.7 +/-    0.54      18.3 +/-    0.54  0.050 / 0.060