PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-16:58:10
G05     53.5           9.3                 5.6 +/-    4.18      15.9 +/-    4.18  0.080 / 0.480
G10     245.8          24.4               11.8 +/-    1.34      23.4 +/-    1.34  0.110 / 0.420
G13     58.5           31.5                6.2 +/-    1.50      10.5 +/-    1.50  0.150 / 0.540
G15     95.7           57.3                8.9 +/-    0.37      10.3 +/-    0.37  0.160 / 0.670
G16     300.7          15.9                6.6 +/-    1.89      16.1 +/-    1.89  0.050 / 0.050
G20     264.2          48.8               10.0 +/-    3.89      12.8 +/-    3.89  0.040 / 0.060
G21     327.3          55.7                7.7 +/-    0.85       9.1 +/-    0.85  0.060 / 0.130
G26     273.7          17.5                7.3 +/-    2.46      17.0 +/-    2.46  0.080 / 0.120
G29     161.8          57.8                9.9 +/-    0.80      11.5 +/-    0.80  0.080 / 0.140