PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-21:13:00
G10     259.3          32.5               19.2 +/-    2.07      31.9 +/-    2.07  0.080 / 0.080
G13     46.9           25.3               12.0 +/-    1.82      23.2 +/-    1.82  0.090 / 0.090
G15     69.1           53.7               14.5 +/-    0.43      17.5 +/-    0.43  0.190 / 0.460
G16     290.0          13.0               15.9 +/-    1.24      41.6 +/-    1.24  0.200 / 0.280
G18     285.9          61.5               15.4 +/-    1.18      17.2 +/-    1.18  0.040 / 0.030
G20     49.4           40.4               17.9 +/-    0.98      25.8 +/-    0.98  0.030 / 0.030
G21     350.9          68.0               14.7 +/-    0.63      15.7 +/-    0.63  0.050 / 0.070
G26     262.9          11.3               20.9 +/-   19.75      56.7 +/-   19.75  0.060 / 0.070
G27     320.7          14.3               13.2 +/-    1.72      33.4 +/-    1.72  0.130 / 0.250
G29     165.1          34.8               21.5 +/-    0.85      34.3 +/-    0.85  0.090 / 0.180