PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-21:27:30
G10     250.5          25.7               17.1 +/-    1.37      32.8 +/-    1.37  0.080 / 0.190
G13     54.9           31.5               13.2 +/-    1.10      22.3 +/-    1.10  0.150 / 0.180
G15     87.3           57.5               15.9 +/-    0.84      18.5 +/-    0.84  0.040 / 0.050
G16     299.2          14.0               10.3 +/-    2.36      26.2 +/-    2.36  0.050 / 0.050
G18     269.0          56.0               14.1 +/-    2.20      16.7 +/-    2.20  0.130 / 0.360
G20     42.9           48.3               14.0 +/-    1.42      18.0 +/-    1.42  0.150 / 0.280
G21     335.1          61.1               14.0 +/-    0.85      15.7 +/-    0.85  0.050 / 0.050
G26     271.5          15.3               14.2 +/-    1.20      35.1 +/-    1.20  0.040 / 0.060
G29     163.0          45.9               18.1 +/-    0.50      24.1 +/-    0.50  0.060 / 0.060