PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-09:12:50
G07     22.5           68.7                4.4 +/-    0.68       4.7 +/-    0.68  0.030 / 0.030
G08     59.3           45.6                3.2 +/-    0.54       4.3 +/-    0.54  0.030 / 0.030
G09     175.3          43.4                8.5 +/-    1.35      11.7 +/-    1.35  0.040 / 0.050
G11     127.4          29.1                7.9 +/-    1.96      14.1 +/-    1.96  0.040 / 0.040
G18     112.0          11.2                5.9 +/-    2.28      16.0 +/-    2.28  0.080 / 0.180
G23     160.6          18.5                4.8 +/-    2.11      11.0 +/-    2.11  0.110 / 0.190
G27     40.2           16.6                1.4 +/-    1.37       3.5 +/-    1.37  0.080 / 0.260
G28     260.4          45.9                7.3 +/-    1.44       9.7 +/-    1.44  0.090 / 0.240
G30     320.4          50.7                4.9 +/-    1.06       6.1 +/-    1.06  0.090 / 0.300