PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-04:12:50
G08     265.6          17.5               11.1 +/-    1.08      25.9 +/-    1.08  0.250 / 0.360
G10     64.1           57.7                7.9 +/-    0.55       9.1 +/-    0.55  0.270 / 0.300
G11     310.3          18.3                7.3 +/-    2.57      16.8 +/-    2.57  0.250 / 0.470
G14     267.2          65.2                9.6 +/-    0.57      10.4 +/-    0.57  0.180 / 0.280
G18     311.6          32.9                6.8 +/-    0.89      11.1 +/-    0.89  0.040 / 0.050
G20     85.0           52.5               17.5 +/-    1.10      21.5 +/-    1.10  0.040 / 0.050
G21     155.2          14.8                4.3 +/-    4.06      10.9 +/-    4.06  0.110 / 0.200
G27     230.7          14.9                9.9 +/-    1.97      24.8 +/-    1.97  0.090 / 0.180
G31     176.3          33.8                8.0 +/-    1.65      13.0 +/-    1.65  0.130 / 0.210
G32     350.7          72.8                7.9 +/-    0.69       8.2 +/-    0.69  0.130 / 0.200