PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-21:42:50
G08     320.2          11.6                7.4 +/-    1.85      20.0 +/-    1.85  0.070 / 0.110
G10     304.5          54.1                9.9 +/-    1.16      11.9 +/-    1.16  0.070 / 0.100
G14     211.5          15.3               15.5 +/-    3.66      38.3 +/-    3.66  0.030 / 0.040
G15     46.1           28.8                7.0 +/-    1.50      12.5 +/-    1.50  0.030 / 0.050
G20     3.3            64.9               10.0 +/-    0.55      10.9 +/-    0.55  0.190 / 0.390
G21     109.3          70.9               11.1 +/-    0.90      11.7 +/-    0.90  0.150 / 0.250
G24     89.6           27.6                9.9 +/-    1.07      18.3 +/-    1.07  0.080 / 0.150
G27     296.5          35.3               11.3 +/-    1.33      17.9 +/-    1.33  0.090 / 0.150
G32     212.4          37.5               13.8 +/-    1.12      20.9 +/-    1.12  0.110 / 0.310