PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/21-16:27:50
G05     48.6           18.8                4.4 +/-    0.88      10.0 +/-    0.88  0.060 / 0.150
G10     237.0          15.5                9.9 +/-    1.97      24.4 +/-    1.97  0.070 / 0.120
G13     72.5           35.0                6.7 +/-    0.45      10.7 +/-    0.45  0.050 / 0.080
G15     119.0          53.6                7.7 +/-    0.57       9.3 +/-    0.57  0.040 / 0.060
G16     311.9          13.5                6.6 +/-    3.13      17.2 +/-    3.13  0.140 / 0.320
G20     250.8          40.2               11.0 +/-    1.18      16.0 +/-    1.18  0.110 / 0.330
G21     315.1          47.6                6.9 +/-    0.59       9.0 +/-    0.59  0.330 / 0.510
G25     198.9          10.5                8.4 +/-   22.76      23.3 +/-   22.76  0.290 / 0.450
G26     285.9          20.0                8.2 +/-    1.45      18.2 +/-    1.45  0.020 / 0.040
G29     154.8          71.7               10.2 +/-    1.48      10.7 +/-    1.48  0.030 / 0.040