PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/21-17:42:50
G10     266.1          39.2               11.3 +/-    1.23      16.6 +/-    1.23  0.090 / 0.160
G13     42.0           18.1                6.4 +/-    1.07      14.7 +/-    1.07  0.080 / 0.150
G15     59.3           48.4                6.9 +/-    0.78       8.9 +/-    0.78  0.040 / 0.050
G16     279.5          13.1               10.0 +/-    1.98      26.1 +/-    1.98  0.040 / 0.050
G20     298.7          61.0                8.7 +/-    0.41       9.7 +/-    0.41  0.110 / 0.310
G21     359.5          70.6                8.7 +/-    0.88       9.2 +/-    0.88  0.140 / 0.360
G24     123.4          13.3               10.0 +/-    1.70      25.8 +/-    1.70  0.110 / 0.310
G27     319.4          17.7                7.4 +/-    1.31      17.3 +/-    1.31  0.100 / 0.310
G29     167.2          33.7               11.0 +/-    1.80      18.0 +/-    1.80  0.060 / 0.100