PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/21-00:57:40
G01     222.3          15.1                8.6 +/-    1.74      21.3 +/-    1.74  0.040 / 0.040
G03     284.3          68.2                5.6 +/-    0.48       6.0 +/-    0.48  0.040 / 0.040
G09     295.8          10.9               -6.7 +/-   31.33     -18.3 +/-   31.33  0.170 / 0.230
G14     86.5           26.0                6.6 +/-    1.48      12.5 +/-    1.48  0.260 / 0.330
G16     141.5          47.4                8.4 +/-    1.01      11.0 +/-    1.01  0.050 / 0.090
G22     216.9          68.9                7.4 +/-    1.16       7.9 +/-    1.16  0.040 / 0.080
G23     309.5          39.6                7.0 +/-    0.85      10.3 +/-    0.85  0.120 / 0.210
G26     92.3           54.2                6.2 +/-    0.52       7.5 +/-    0.52  0.110 / 0.220
G31     46.7           29.2                3.8 +/-    0.95       6.7 +/-    0.95  0.030 / 0.030