PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-08:28:00
G01     318.3          19.7                6.4 +/-    2.34      14.1 +/-    2.34  0.040 / 0.050
G08     257.5          12.0                7.1 +/-    2.87      19.0 +/-    2.87  0.040 / 0.060
G10     83.3           52.0                6.7 +/-    0.82       8.3 +/-    0.82  0.160 / 0.300
G11     301.7          23.5                6.1 +/-    1.55      12.3 +/-    1.55  0.160 / 0.280
G14     292.6          68.6                6.2 +/-    0.71       6.6 +/-    0.71  0.160 / 0.410
G18     302.9          41.3                7.0 +/-    1.82      10.0 +/-    1.82  0.130 / 0.450
G20     110.9          14.8                5.0 +/-    1.09      12.4 +/-    1.09  0.080 / 0.190
G22     302.8          15.3                4.6 +/-    2.08      11.4 +/-    2.08  0.080 / 0.210
G31     173.2          46.6                8.6 +/-    1.04      11.3 +/-    1.04  0.170 / 0.400
G32     15.5           64.5                5.3 +/-    0.71       5.9 +/-    0.71  0.150 / 0.390