PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-21:12:40
G03     243.8          69.5                8.0 +/-    0.53       8.5 +/-    0.53  0.040 / 0.040
G09     301.3          15.1                6.7 +/-    1.98      16.7 +/-    1.98  0.040 / 0.040
G14     97.2           16.8                8.7 +/-    1.99      20.6 +/-    1.99  0.040 / 0.040
G16     135.9          56.2                9.8 +/-    0.43      11.5 +/-    0.43  0.040 / 0.040
G22     197.2          58.7                9.0 +/-    0.85      10.3 +/-    0.85  0.090 / 0.160
G23     317.0          46.8                8.6 +/-    0.78      11.3 +/-    0.78  0.220 / 0.220
G26     74.9           53.4                7.8 +/-    0.79       9.5 +/-    0.79  0.090 / 0.260
G31     50.5           22.4                6.0 +/-    2.25      12.4 +/-    2.25  0.130 / 0.200