PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-08:12:50
G08     269.8          19.2                3.5 +/-    1.46       8.0 +/-    1.46  0.180 / 0.340
G10     58.5           58.2                3.0 +/-    0.85       3.5 +/-    0.85  0.170 / 0.330
G14     261.9          65.6                3.0 +/-    0.35       3.3 +/-    0.35  0.020 / 0.030
G18     313.2          31.5                4.2 +/-    2.43       7.1 +/-    2.43  0.030 / 0.030
G20     93.3           38.0                4.4 +/-    0.37       6.6 +/-    0.37  0.090 / 0.190
G21     154.3          16.7                2.9 +/-    1.99       6.9 +/-    1.99  0.090 / 0.180
G24     40.4           10.8                2.7 +/-    1.82       7.4 +/-    1.82  0.040 / 0.060
G27     234.7          18.0                5.7 +/-    1.65      13.2 +/-    1.65  0.050 / 0.060
G31     178.8          27.8                4.0 +/-    1.50       7.3 +/-    1.50  0.090 / 0.220
G32     313.0          74.9                4.6 +/-    1.11       4.8 +/-    1.11  0.090 / 0.200