PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-20:42:30
G03     229.0          66.8               11.3 +/-    0.35      12.2 +/-    0.35  0.050 / 0.040
G09     304.1          18.5                8.6 +/-    1.92      19.7 +/-    1.92  0.040 / 0.050
G14     101.0          14.0               10.1 +/-    1.57      25.7 +/-    1.57  0.110 / 0.380
G16     126.7          60.2               12.8 +/-    0.44      14.5 +/-    0.44  0.110 / 0.330
G22     193.2          53.4               11.8 +/-    0.62      14.3 +/-    0.62  0.030 / 0.050
G23     321.1          51.0                9.6 +/-    0.52      12.0 +/-    0.52  0.030 / 0.050
G26     66.7           51.0                9.4 +/-    1.02      11.7 +/-    1.02  0.420 / 0.150
G31     53.1           18.4                7.2 +/-    3.19      16.4 +/-    3.19  0.140 / 0.230