PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-00:12:50
G10     274.9          43.6                7.7 +/-    1.11      10.6 +/-    1.11  0.040 / 0.040
G13     38.9           12.2                6.1 +/-    1.39      16.2 +/-    1.39  0.040 / 0.030
G15     53.0           43.2                5.8 +/-    0.99       8.1 +/-    0.99  0.100 / 0.300
G20     310.3          62.4                7.9 +/-    0.78       8.8 +/-    0.78  0.390 / 0.360
G21     20.0           75.0                7.8 +/-    0.66       8.0 +/-    0.66  0.070 / 0.160
G24     115.7          17.9                7.3 +/-    2.16      16.8 +/-    2.16  0.150 / 0.120
G27     315.8          23.2                6.6 +/-    1.33      13.4 +/-    1.33  0.060 / 0.060
G29     167.4          24.0                8.9 +/-    1.06      17.7 +/-    1.06  0.070 / 0.060
G32     205.4          14.0               10.1 +/-    2.42      25.7 +/-    2.42  0.240 / 0.450