PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-04:43:10
G01     241.0          29.5                8.5 +/-    1.21      15.0 +/-    1.21  0.030 / 0.050
G03     312.9          50.4                4.6 +/-    1.80       5.8 +/-    1.80  0.020 / 0.040
G14     70.9           33.7                3.2 +/-    1.28       5.2 +/-    1.28  0.090 / 0.130
G16     160.9          25.7                9.0 +/-    1.36      17.3 +/-    1.36  0.090 / 0.180
G22     286.1          73.1                6.3 +/-    0.98       6.6 +/-    0.98  0.070 / 0.110
G23     293.0          23.7                5.8 +/-    1.84      11.8 +/-    1.84  0.080 / 0.110
G26     130.7          44.6                8.6 +/-    0.84      11.7 +/-    0.84  0.030 / 0.040
G31     39.7           51.2                3.2 +/-    0.39       4.0 +/-    0.39  0.040 / 0.030
G32     84.2           19.3                5.0 +/-    0.54      11.2 +/-    0.54  0.070 / 0.270