PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/14-11:57:40
G08     270.2          20.0                4.6 +/-    1.35      10.0 +/-    1.35  0.160 / 0.250
G10     54.5           59.2                4.1 +/-    0.65       4.7 +/-    0.65  0.150 / 0.290
G14     258.4          64.6                5.9 +/-    0.40       6.5 +/-    0.40  0.030 / 0.020
G18     313.6          31.0                4.1 +/-    1.60       7.0 +/-    1.60  0.040 / 0.020
G20     91.4           39.1                4.5 +/-    1.77       6.6 +/-    1.77  0.030 / 0.020
G21     153.2          16.4                3.8 +/-    2.70       9.0 +/-    2.70  0.030 / 0.020
G24     40.7           11.3                2.4 +/-    2.86       6.5 +/-    2.86  0.040 / 0.040
G27     237.0          19.4                4.4 +/-    3.37       9.8 +/-    3.37  0.040 / 0.050
G31     180.6          24.2                4.4 +/-    1.56       8.8 +/-    1.56  0.090 / 0.130
G32     304.3          74.8                5.4 +/-    0.58       5.6 +/-    0.58  0.070 / 0.130