PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-11:57:40
G01     320.6          13.6               -0.8 +/-   16.76      -2.2 +/-   16.76  0.100 / 0.270
G08     261.5          16.2                5.7 +/-    1.70      13.7 +/-    1.70  0.090 / 0.280
G10     71.2           55.2                3.8 +/-    0.53       4.5 +/-    0.53  0.040 / 0.030
G11     307.1          20.9                1.5 +/-    1.83       3.3 +/-    1.83  0.040 / 0.020
G14     281.1          69.7                3.5 +/-    0.78       3.7 +/-    0.78  0.030 / 0.020
G18     308.0          38.6                3.0 +/-    1.03       4.5 +/-    1.03  0.030 / 0.020
G20     100.4          32.9                3.8 +/-    0.76       6.3 +/-    0.76  0.160 / 0.390
G27     229.9          13.2                3.2 +/-    2.05       8.2 +/-    2.05  0.080 / 0.220
G31     178.8          33.9                4.7 +/-    0.79       7.6 +/-    0.79  0.040 / 0.050
G32     338.8          72.8                4.2 +/-    0.50       4.4 +/-    0.50  0.040 / 0.040