PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-19:43:00
G10     251.4          27.7               11.8 +/-    2.07      21.7 +/-    2.07  0.140 / 0.680
G13     52.5           29.1                8.3 +/-    0.90      14.8 +/-    0.90  0.150 / 0.700
G15     92.7           59.8               10.3 +/-    0.50      11.7 +/-    0.50  0.040 / 0.060
G16     294.2          15.6                7.2 +/-    4.16      17.7 +/-    4.16  0.050 / 0.060
G20     271.1          51.5               10.1 +/-    1.08      12.6 +/-    1.08  0.050 / 0.130
G21     335.6          61.1               10.7 +/-    0.53      12.0 +/-    0.53  0.050 / 0.130
G26     267.0          15.1                9.6 +/-    2.19      23.7 +/-    2.19  0.030 / 0.040
G29     164.9          49.2               10.9 +/-    1.14      13.9 +/-    1.14  0.030 / 0.040