PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-23:12:30
G08     297.5          22.9               12.8 +/-    1.36      26.2 +/-    1.36  0.020 / 0.030
G10     353.4          62.4               11.8 +/-    0.76      13.1 +/-    0.76  0.030 / 0.030
G14     225.7          43.0               14.1 +/-    2.16      19.5 +/-    2.16  0.040 / 0.060
G18     56.2           53.9               14.2 +/-    1.04      17.1 +/-    1.04  0.050 / 0.070
G21     142.8          43.9               15.0 +/-    0.71      20.6 +/-    0.71  0.050 / 0.090
G24     62.7           28.6               12.9 +/-    0.92      23.2 +/-    0.92  0.070 / 0.100
G27     258.6          34.0               15.2 +/-    1.42      24.5 +/-    1.42  0.080 / 0.090
G32     235.6          59.6               12.6 +/-    2.24      14.3 +/-    2.24  0.070 / 0.090