PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-18:13:00
G10     264.7          38.4                9.8 +/-    1.31      14.6 +/-    1.31  0.210 / 0.260
G13     42.7           19.0                8.9 +/-    2.72      20.1 +/-    2.72  0.140 / 0.240
G15     61.0           49.7                8.7 +/-    0.94      11.1 +/-    0.94  0.040 / 0.040
G16     280.7          13.5                6.5 +/-    3.45      16.7 +/-    3.45  0.050 / 0.050
G20     296.0          60.3                9.4 +/-    0.87      10.7 +/-    0.87  0.120 / 0.490
G21     356.5          69.7                9.5 +/-    0.81      10.0 +/-    0.81  0.110 / 0.480
G24     124.4          12.5               11.0 +/-    3.33      29.0 +/-    3.33  0.200 / 0.360
G27     319.9          16.7                9.3 +/-    1.91      22.1 +/-    1.91  0.210 / 0.340
G29     167.0          34.9                9.8 +/-    0.90      15.6 +/-    0.90  0.100 / 0.520