PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/19-04:27:50
G01     310.0          32.1                6.3 +/-    2.00      10.6 +/-    2.00  0.090 / 0.110
G10     102.0          41.2                6.8 +/-    0.63       9.8 +/-    0.63  0.070 / 0.090
G11     286.4          27.2                4.9 +/-    1.40       9.2 +/-    1.40  0.040 / 0.050
G14     345.3          69.0                5.7 +/-    0.71       6.0 +/-    0.71  0.040 / 0.050
G18     282.6          49.7               10.9 +/-    1.21      13.7 +/-    1.21  0.130 / 0.150
G20     118.1          17.3                5.2 +/-    1.62      12.1 +/-    1.62  0.110 / 0.140
G22     308.6          22.6                6.8 +/-    1.35      14.0 +/-    1.35  0.050 / 0.060
G25     87.1           15.0                5.8 +/-    3.68      14.3 +/-    3.68  0.050 / 0.070
G31     166.8          61.5                6.9 +/-    0.60       7.7 +/-    0.60  0.030 / 0.030
G32     30.0           56.5                5.7 +/-    1.05       6.7 +/-    1.05  0.040 / 0.040