PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-04:27:30
G01     298.3          37.8                5.6 +/-    1.06       8.4 +/-    1.06  0.040 / 0.050
G10     114.0          34.8                6.1 +/-    0.63       9.7 +/-    0.63  0.030 / 0.050
G11     269.9          28.7                5.2 +/-    1.28       9.3 +/-    1.28  0.040 / 0.060
G14     17.0           61.5                4.4 +/-    0.63       4.9 +/-    0.63  0.040 / 0.050
G22     312.2          32.9                4.3 +/-    1.52       7.1 +/-    1.52  0.050 / 0.110
G25     69.4           17.3                5.4 +/-    0.88      12.6 +/-    0.88  0.050 / 0.100
G31     157.3          73.4                6.1 +/-    0.79       6.3 +/-    0.79  0.070 / 0.170
G32     43.1           47.9                4.0 +/-    0.53       5.2 +/-    0.53  0.080 / 0.170