PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/03-07:42:40
G08     295.2          23.0                4.6 +/-    1.53       9.4 +/-    1.53  0.050 / 0.030
G10     6.4            62.8                3.7 +/-    0.42       4.2 +/-    0.42  0.040 / 0.020
G14     227.9          45.6                7.6 +/-    1.52      10.1 +/-    1.52  0.110 / 0.120
G20     63.2           53.0                4.5 +/-    0.69       5.5 +/-    0.69  0.080 / 0.110
G21     145.6          40.9                5.7 +/-    0.82       8.2 +/-    0.82  0.040 / 0.100
G24     57.0           25.6                4.1 +/-    0.60       7.9 +/-    0.60  0.050 / 0.090
G27     257.9          32.8                5.4 +/-    0.91       8.9 +/-    0.91  0.070 / 0.130
G32     239.6          61.9                8.2 +/-    0.47       9.1 +/-    0.47  0.080 / 0.100