PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-21:12:40
G10     309.4          55.9                9.7 +/-    1.19      11.4 +/-    1.19  0.040 / 0.040
G14     212.0          15.2               16.8 +/-    4.43      41.6 +/-    4.43  0.040 / 0.040
G15     45.6           22.6                7.9 +/-    2.63      16.3 +/-    2.63  0.160 / 0.470
G20     10.4           64.2               10.6 +/-    0.60      11.6 +/-    0.60  0.150 / 0.300
G21     112.3          70.5               11.5 +/-    0.69      12.1 +/-    0.69  0.150 / 0.140
G24     92.2           28.9               11.1 +/-    0.88      19.9 +/-    0.88  0.110 / 0.190
G27     293.7          36.7               11.8 +/-    3.03      18.2 +/-    3.03  0.100 / 0.130
G32     212.9          38.7               13.3 +/-    1.52      19.7 +/-    1.52  0.100 / 0.100