PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-05:57:50
G02     8.9            72.8                4.8 +/-    0.66       5.0 +/-    0.66  0.050 / 0.060
G05     160.0          40.5                7.9 +/-    1.21      11.4 +/-    1.21  0.050 / 0.070
G06     42.9           36.7                3.7 +/-    0.51       5.7 +/-    0.51  0.020 / 0.030
G12     298.5          75.3                3.9 +/-    1.16       4.0 +/-    1.16  0.020 / 0.030
G19     80.9           23.4                4.4 +/-    1.73       9.0 +/-    1.73  0.050 / 0.060
G24     224.4          18.6                5.0 +/-    3.46      11.4 +/-    3.46  0.060 / 0.080
G25     316.0          33.8                4.7 +/-    1.76       7.6 +/-    1.76  0.060 / 0.110
G29     291.3          13.4                5.1 +/-    1.42      13.1 +/-    1.42  0.080 / 0.120