PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-17:43:00
G10     264.2          35.8               12.0 +/-    1.11      18.8 +/-    1.11  0.090 / 0.140
G13     43.7           21.4               10.3 +/-    1.23      22.0 +/-    1.23  0.100 / 0.120
G15     61.1           49.5               12.3 +/-    0.39      15.6 +/-    0.39  0.040 / 0.100
G16     287.1          11.6               11.0 +/-    2.30      29.5 +/-    2.30  0.050 / 0.090
G18     298.1          64.4               10.3 +/-    0.62      11.3 +/-    0.62  0.030 / 0.040
G20     51.9           38.2                9.8 +/-    0.42      14.6 +/-    0.42  0.040 / 0.040
G21     9.1            72.1               12.1 +/-    0.58      12.6 +/-    0.58  0.100 / 0.340
G24     123.5          12.4               12.2 +/-   23.05      32.2 +/-   23.05  0.100 / 0.360
G27     319.0          18.2                8.8 +/-    0.82      20.3 +/-    0.82  0.180 / 0.520
G29     165.3          28.5               15.0 +/-    1.58      27.0 +/-    1.58  0.140 / 0.480