PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-05:28:00
G01     310.0          31.0                5.6 +/-    1.95       9.6 +/-    1.95  0.100 / 0.160
G10     102.5          42.3                6.6 +/-    0.62       9.3 +/-    0.62  0.080 / 0.160
G11     285.3          28.0                3.7 +/-    1.29       6.9 +/-    1.29  0.040 / 0.050
G14     342.2          68.8                5.7 +/-    0.40       6.1 +/-    0.40  0.040 / 0.050
G18     282.9          49.1                4.9 +/-    0.72       6.3 +/-    0.72  0.080 / 0.120
G20     114.9          31.5                7.8 +/-    1.04      13.3 +/-    1.04  0.070 / 0.100
G22     308.7          23.9                4.9 +/-    1.45       9.8 +/-    1.45  0.090 / 0.190
G25     85.2           15.4                4.2 +/-    0.97      10.3 +/-    0.97  0.090 / 0.170
G31     165.2          63.1                9.4 +/-    0.94      10.4 +/-    0.94  0.040 / 0.050
G32     34.6           53.4                4.3 +/-    0.42       5.2 +/-    0.42  0.040 / 0.050