PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-22:58:10
G10     250.8          26.0               13.3 +/-    1.78      25.4 +/-    1.78  0.060 / 0.140
G13     54.4           31.2               13.5 +/-    1.52      23.1 +/-    1.52  0.060 / 0.130
G15     87.9           57.9               15.8 +/-    0.37      18.3 +/-    0.37  0.060 / 0.050
G16     297.8          14.3                9.1 +/-    1.86      23.0 +/-    1.86  0.060 / 0.050
G18     269.1          55.7               15.1 +/-    1.22      17.8 +/-    1.22  0.120 / 0.350
G20     43.5           47.4               12.4 +/-    0.33      16.2 +/-    0.33  0.110 / 0.380
G21     334.6          60.9               14.0 +/-    1.10      15.7 +/-    1.10  0.040 / 0.060
G26     270.2          15.3               12.7 +/-    2.29      31.4 +/-    2.29  0.040 / 0.060
G29     163.7          46.4               15.7 +/-    0.94      20.7 +/-    0.94  0.050 / 0.070