PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/13-12:42:40
G08     304.2          21.7                3.7 +/-    2.11       7.8 +/-    2.11  0.020 / 0.020
G10     342.8          61.4                3.5 +/-    0.53       3.9 +/-    0.53  0.020 / 0.020
G14     220.3          36.0                5.6 +/-    1.75       8.7 +/-    1.75  0.040 / 0.080
G20     46.4           58.2                5.3 +/-    0.53       6.1 +/-    0.53  0.080 / 0.070
G21     138.2          47.4                5.5 +/-    0.60       7.2 +/-    0.60  0.040 / 0.050
G24     66.1           28.0                2.9 +/-    1.09       5.2 +/-    1.09  0.040 / 0.050
G27     272.0          36.1                5.6 +/-    1.42       8.8 +/-    1.42  0.100 / 0.080
G32     227.1          53.6                5.8 +/-    2.71       7.1 +/-    2.71  0.110 / 0.070