PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-20:12:40
G10     267.3          39.8               12.9 +/-    1.55      18.8 +/-    1.55  0.050 / 0.040
G13     41.5           17.2               10.8 +/-    2.60      25.3 +/-    2.60  0.050 / 0.050
G15     59.5           49.3               12.4 +/-    1.11      15.8 +/-    1.11  0.100 / 0.370
G16     278.7          12.7               10.6 +/-    1.21      28.0 +/-    1.21  0.210 / 0.290
G20     299.4          60.8               11.9 +/-    1.25      13.5 +/-    1.25  0.030 / 0.030
G21     0.8            71.1               13.8 +/-    0.68      14.5 +/-    0.68  0.030 / 0.050
G24     122.2          14.0               14.0 +/-    1.95      35.7 +/-    1.95  0.110 / 0.130
G27     319.0          18.4               12.3 +/-    2.25      28.2 +/-    2.25  0.140 / 0.160
G29     167.3          32.0               14.2 +/-    1.02      23.8 +/-    1.02  0.170 / 0.540