PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-19:12:40
G10     268.1          40.2               15.0 +/-    1.13      21.8 +/-    1.13  0.050 / 0.050
G13     41.2           16.7               11.0 +/-    2.74      26.2 +/-    2.74  0.050 / 0.050
G15     58.2           48.0               12.0 +/-    0.78      15.5 +/-    0.78  0.150 / 0.560
G16     277.9          12.5               13.2 +/-    1.89      34.7 +/-    1.89  0.160 / 0.480
G20     301.3          61.3               13.1 +/-    0.95      14.7 +/-    0.95  0.280 / 0.290
G21     2.7            71.6               14.3 +/-    0.84      15.0 +/-    0.84  0.170 / 0.260
G24     121.8          14.4               16.8 +/-    2.37      42.3 +/-    2.37  0.030 / 0.040
G27     318.7          19.0               12.3 +/-    2.18      27.8 +/-    2.18  0.030 / 0.040
G29     167.4          31.6               14.3 +/-    1.35      24.2 +/-    1.35  0.160 / 0.160