PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-00:28:00
G10     267.8          39.9                9.3 +/-    1.39      13.5 +/-    1.39  0.040 / 0.040
G13     41.3           17.0                6.9 +/-    2.37      16.3 +/-    2.37  0.030 / 0.040
G15     58.3           48.0                7.1 +/-    0.51       9.2 +/-    0.51  0.080 / 0.070
G16     279.5          12.3                8.2 +/-    2.39      21.7 +/-    2.39  0.070 / 0.060
G20     298.0          60.1                7.8 +/-    0.82       8.9 +/-    0.82  0.050 / 0.050
G21     2.6            71.6                8.7 +/-    0.75       9.1 +/-    0.75  0.050 / 0.040
G24     120.9          14.4                9.8 +/-    1.53      24.7 +/-    1.53  0.180 / 0.280
G27     318.9          18.5                7.4 +/-    1.96      16.9 +/-    1.96  0.110 / 0.260
G29     166.8          30.2               10.2 +/-    2.19      17.7 +/-    2.19  0.110 / 0.150