PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-04:42:40
G01     241.4          29.8                9.0 +/-    1.19      15.8 +/-    1.19  0.090 / 0.140
G03     313.1          50.0                5.4 +/-    0.80       6.8 +/-    0.80  0.060 / 0.110
G14     70.5           34.0                4.8 +/-    0.93       7.7 +/-    0.93  0.120 / 0.150
G16     161.1          25.3               10.1 +/-    1.33      19.6 +/-    1.33  0.120 / 0.130
G22     287.5          72.8                7.2 +/-    0.46       7.5 +/-    0.46  0.040 / 0.050
G23     292.6          23.5                6.6 +/-    1.78      13.3 +/-    1.78  0.040 / 0.040
G26     131.2          44.3                8.4 +/-    0.79      11.5 +/-    0.79  0.030 / 0.030
G31     39.6           51.6                5.4 +/-    0.66       6.7 +/-    0.66  0.040 / 0.030
G32     83.8           19.6                5.3 +/-    1.28      11.8 +/-    1.28  0.080 / 0.160