PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/04-21:57:40
G05     51.0           12.0                6.0 +/-    2.45      16.1 +/-    2.45  0.050 / 0.060
G10     240.3          18.8               11.2 +/-    1.03      25.4 +/-    1.03  0.040 / 0.060
G13     66.7           34.2                8.0 +/-    2.01      12.8 +/-    2.01  0.050 / 0.150
G15     113.1          55.9                9.8 +/-    0.28      11.5 +/-    0.28  0.060 / 0.120
G16     308.6          14.2                6.1 +/-    3.24      15.4 +/-    3.24  0.040 / 0.030
G20     254.6          41.7               10.3 +/-    2.97      14.6 +/-    2.97  0.030 / 0.040
G21     319.2          50.5                9.1 +/-    0.56      11.4 +/-    0.56  0.080 / 0.430
G26     281.2          19.3                7.8 +/-    1.18      17.5 +/-    1.18  0.080 / 0.440
G29     157.6          64.8                9.1 +/-    0.44       9.9 +/-    0.44  0.080 / 0.210