PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/21-00:42:50
G08     285.2          21.2                7.2 +/-    2.32      15.4 +/-    2.32  0.080 / 0.180
G10     37.4           61.3                6.5 +/-    0.96       7.3 +/-    0.96  0.090 / 0.140
G14     241.7          55.3                8.6 +/-    2.86      10.2 +/-    2.86  0.080 / 0.080
G18     317.1          20.9                4.5 +/-    2.09       9.6 +/-    2.09  0.090 / 0.070
G20     81.4           44.9                7.6 +/-    0.63      10.2 +/-    0.63  0.120 / 0.320
G21     152.1          29.3                9.4 +/-    0.75      16.8 +/-    0.75  0.260 / 0.230
G24     47.2           19.6                6.5 +/-    1.69      14.5 +/-    1.69  0.150 / 0.330
G27     242.8          25.2               10.2 +/-    1.53      19.8 +/-    1.53  0.150 / 0.370
G31     180.0          18.3               10.0 +/-    2.58      22.9 +/-    2.58  0.030 / 0.020
G32     280.6          75.3                7.9 +/-    0.44       8.2 +/-    0.44  0.030 / 0.030