PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-07:57:40
G08     301.3          22.0                5.3 +/-    0.76      11.1 +/-    0.76  0.030 / 0.020
G10     352.9          62.3                5.3 +/-    0.59       5.9 +/-    0.59  0.030 / 0.020
G14     223.1          39.9                7.4 +/-    1.20      10.8 +/-    1.20  0.050 / 0.060
G20     53.7           56.2                6.8 +/-    1.05       8.0 +/-    1.05  0.050 / 0.060
G21     141.8          46.7                7.5 +/-    0.83       9.8 +/-    0.83  0.100 / 0.080
G24     63.0           27.8                3.5 +/-    1.11       6.4 +/-    1.11  0.090 / 0.090
G27     265.3          35.2                8.2 +/-    1.86      12.9 +/-    1.86  0.080 / 0.120
G32     231.4          56.1                8.5 +/-    2.27      10.0 +/-    2.27  0.150 / 0.140