PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-23:43:00
G07     315.8          50.6                5.0 +/-    1.11       6.2 +/-    1.11  0.220 / 0.480
G08     120.3          46.0                8.6 +/-    0.73      11.5 +/-    0.73  0.270 / 0.330
G09     262.4          82.6                8.6 +/-    0.66       8.7 +/-    0.66  0.030 / 0.050
G16     43.1           19.3                5.1 +/-    2.64      11.3 +/-    2.64  0.050 / 0.050
G23     149.6          55.0                7.9 +/-    0.50       9.4 +/-    0.50  0.040 / 0.040
G27     68.2           35.9                5.6 +/-    1.06       8.8 +/-    1.06  0.030 / 0.050
G28     228.6          19.8                6.9 +/-    1.87      15.3 +/-    1.87  0.260 / 0.260
G30     293.4          29.6                6.8 +/-    1.99      12.0 +/-    1.99  0.120 / 0.490