PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-22:58:00
G10     243.9          22.3               10.8 +/-    1.18      22.5 +/-    1.18  0.040 / 0.050
G13     61.1           32.7                7.3 +/-    1.19      12.1 +/-    1.19  0.040 / 0.060
G15     102.7          57.4               10.2 +/-    0.47      11.9 +/-    0.47  0.060 / 0.110
G16     304.3          15.0                6.4 +/-    1.66      15.8 +/-    1.66  0.060 / 0.110
G20     259.7          44.9               10.1 +/-    3.50      13.6 +/-    3.50  0.030 / 0.040
G21     324.3          53.9                8.3 +/-    0.53      10.0 +/-    0.53  0.030 / 0.050
G26     276.4          18.1                8.9 +/-    0.97      20.6 +/-    0.97  0.110 / 0.390
G29     160.0          58.8               11.3 +/-    0.73      12.9 +/-    0.73  0.110 / 0.390