PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-17:42:50
G10     254.9          31.9               10.0 +/-    2.25      16.9 +/-    2.25  0.040 / 0.060
G13     48.9           25.8                7.9 +/-    1.45      15.2 +/-    1.45  0.050 / 0.040
G15     75.3           55.3                8.9 +/-    1.03      10.5 +/-    1.03  0.150 / 0.490
G16     290.2          15.6                6.2 +/-    1.91      15.2 +/-    1.91  0.120 / 0.430
G20     279.0          55.3               10.2 +/-    2.95      12.2 +/-    2.95  0.100 / 0.170
G21     340.1          63.0                9.0 +/-    0.70      10.0 +/-    0.70  0.150 / 0.200
G26     263.7          13.5                7.5 +/-    1.88      19.4 +/-    1.88  0.040 / 0.040
G29     165.1          45.7               10.1 +/-    1.47      13.5 +/-    1.47  0.040 / 0.040