PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-23:42:30
G03     250.6          69.4                7.7 +/-    1.44       8.2 +/-    1.44  0.040 / 0.030
G09     301.2          15.2                5.8 +/-    2.51      14.3 +/-    2.51  0.040 / 0.030
G14     97.0           16.5                9.9 +/-    1.45      23.9 +/-    1.45  0.030 / 0.040
G16     140.2          55.0               11.6 +/-    0.45      13.8 +/-    0.45  0.030 / 0.040
G22     199.2          60.0                9.3 +/-    0.51      10.5 +/-    0.51  0.080 / 0.140
G23     315.8          45.4                7.6 +/-    0.87      10.2 +/-    0.87  0.050 / 0.090
G26     78.2           54.6                8.1 +/-    0.41       9.7 +/-    0.41  0.080 / 0.210
G31     49.7           24.4                5.6 +/-    2.26      11.0 +/-    2.26  0.090 / 0.210