PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-00:27:50
G10     272.0          42.1               11.2 +/-    0.85      15.7 +/-    0.85  0.040 / 0.030
G13     39.8           14.1                6.7 +/-    3.06      17.1 +/-    3.06  0.040 / 0.040
G15     54.9           45.1                7.9 +/-    1.09      10.6 +/-    1.09  0.170 / 0.180
G16     276.0          11.0                7.7 +/-    2.95      21.1 +/-    2.95  0.210 / 0.210
G20     305.3          61.6                9.9 +/-    0.66      11.1 +/-    0.66  0.110 / 0.060
G21     12.4           73.8                9.5 +/-    0.56       9.9 +/-    0.56  0.120 / 0.060
G24     117.8          16.5               10.6 +/-    1.52      25.4 +/-    1.52  0.140 / 0.300
G27     317.2          21.3                8.3 +/-    1.97      17.6 +/-    1.97  0.220 / 0.320
G29     167.2          26.4                9.8 +/-    1.36      18.5 +/-    1.36  0.040 / 0.050
G32     205.0          11.6               -1.6 +/-   37.33      -4.3 +/-   37.33  0.030 / 0.050