PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/05-22:57:50
G13     42.2           18.3                8.5 +/-    3.74      19.5 +/-    3.74  0.170 / 0.250
G15     60.6           49.8                9.0 +/-    0.60      11.4 +/-    0.60  0.210 / 0.210
G16     280.6          12.9                7.4 +/-    2.14      19.4 +/-    2.14  0.040 / 0.040
G20     295.1          59.5                8.1 +/-    0.86       9.3 +/-    0.86  0.040 / 0.050
G21     358.0          70.3                9.3 +/-    0.75       9.8 +/-    0.75  0.460 / 0.310
G24     122.7          13.3               11.0 +/-    2.85      28.6 +/-    2.85  0.410 / 0.370
G27     319.6          17.2                9.1 +/-    2.26      21.4 +/-    2.26  0.030 / 0.040
G29     166.8          32.6               10.2 +/-    1.39      16.9 +/-    1.39  0.030 / 0.040