PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-19:58:00
G10     264.0          37.8               12.3 +/-    1.18      18.6 +/-    1.18  0.170 / 0.320
G13     43.0           19.5                8.8 +/-    0.86      19.7 +/-    0.86  0.120 / 0.260
G15     63.0           51.4               12.6 +/-    0.68      15.6 +/-    0.68  0.040 / 0.060
G16     281.6          13.6                9.6 +/-    1.30      24.7 +/-    1.30  0.040 / 0.050
G20     293.6          59.5               12.0 +/-    0.86      13.7 +/-    0.86  0.090 / 0.280
G21     354.4          69.1               11.7 +/-    0.46      12.5 +/-    0.46  0.070 / 0.240
G24     124.7          12.2               14.6 +/-    2.14      38.8 +/-    2.14  0.150 / 0.470
G27     320.2          16.0                6.7 +/-    1.56      16.2 +/-    1.56  0.160 / 0.430
G29     166.8          35.3               13.4 +/-    1.72      21.2 +/-    1.72  0.030 / 0.050