PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-04:27:40
G01     227.7          20.1                7.1 +/-    2.23      15.6 +/-    2.23  0.180 / 0.340
G03     298.1          64.6                6.1 +/-    0.53       6.7 +/-    0.53  0.180 / 0.420
G14     81.3           28.4                5.2 +/-    1.23       9.3 +/-    1.23  0.100 / 0.170
G16     148.5          40.6                6.6 +/-    0.69       9.6 +/-    0.69  0.090 / 0.150
G22     234.5          73.4                6.9 +/-    0.47       7.2 +/-    0.47  0.050 / 0.090
G23     305.5          36.7                6.1 +/-    1.16       9.4 +/-    1.16  0.050 / 0.090
G26     104.9          52.9                6.6 +/-    0.45       8.0 +/-    0.45  0.030 / 0.040
G31     44.4           34.4                3.9 +/-    1.20       6.3 +/-    1.20  0.030 / 0.030