PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-07:57:30
G07     319.6          53.4                5.0 +/-    0.65       6.1 +/-    0.65  0.030 / 0.040
G08     123.5          45.7                7.3 +/-    0.53       9.8 +/-    0.53  0.040 / 0.050
G09     246.5          83.4                7.2 +/-    0.41       7.2 +/-    0.41  0.080 / 0.050
G16     43.7           15.8                2.5 +/-    3.97       6.0 +/-    3.97  0.040 / 0.060
G23     149.2          52.2                7.3 +/-    0.66       8.9 +/-    0.66  0.030 / 0.030
G27     69.3           36.4                6.1 +/-    1.03       9.5 +/-    1.03  0.030 / 0.030
G28     227.7          13.2                3.9 +/-    6.13      10.1 +/-    6.13  0.280 / 0.470
G30     292.0          26.8                5.8 +/-    2.22      10.8 +/-    2.22  0.170 / 0.320