PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/03-22:28:10
G10     253.5          28.1               20.9 +/-    1.85      38.0 +/-    1.85  0.070 / 0.140
G13     51.8           29.5               15.8 +/-    1.03      28.0 +/-    1.03  0.060 / 0.120
G15     81.1           57.0               20.4 +/-    1.28      23.9 +/-    1.28  0.140 / 0.350
G16     295.2          14.1               13.5 +/-    1.68      34.4 +/-    1.68  0.100 / 0.410
G18     274.1          57.7               17.9 +/-    1.87      20.7 +/-    1.87  0.030 / 0.040
G20     45.5           45.0               16.2 +/-    0.86      21.9 +/-    0.86  0.030 / 0.050
G21     339.2          63.2               18.5 +/-    0.53      20.5 +/-    0.53  0.060 / 0.070
G26     267.7          14.0               17.0 +/-    2.08      43.3 +/-    2.08  0.060 / 0.070
G29     164.2          42.6               21.1 +/-    0.41      29.5 +/-    0.41  0.080 / 0.130