PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-21:28:00
G05     52.1           10.6                9.6 +/-    2.67      26.4 +/-    2.67  0.410 / 0.220
G10     242.1          19.1               14.6 +/-    2.14      32.8 +/-    2.14  0.290 / 0.230
G13     64.6           34.5                9.8 +/-    1.14      15.7 +/-    1.14  0.040 / 0.060
G15     116.2          57.1               12.3 +/-    0.53      14.4 +/-    0.53  0.050 / 0.050
G16     304.5          15.6                7.2 +/-    1.87      17.5 +/-    1.87  0.110 / 0.410
G20     245.5          7.8                12.2 +/-    2.06      35.6 +/-    2.06  0.140 / 0.330
G21     320.5          51.9               10.5 +/-    0.74      12.9 +/-    0.74  0.060 / 0.110
G26     276.7          19.4               10.2 +/-    1.10      22.8 +/-    1.10  0.080 / 0.110
G29     161.5          63.7               11.4 +/-    0.94      12.6 +/-    0.94  0.040 / 0.030