PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-21:58:10
G10     263.3          35.2               15.9 +/-    1.52      25.1 +/-    1.52  0.050 / 0.070
G13     44.4           22.4               10.8 +/-    2.33      22.3 +/-    2.33  0.070 / 0.090
G15     63.6           51.5               13.4 +/-    1.03      16.6 +/-    1.03  0.040 / 0.040
G16     285.6          12.2               13.0 +/-    2.13      34.7 +/-    2.13  0.040 / 0.040
G18     293.6          63.1               14.0 +/-    0.69      15.5 +/-    0.69  0.240 / 0.340
G20     52.4           37.0               12.0 +/-    0.83      18.3 +/-    0.83  0.310 / 0.320
G21     358.5          70.5               15.0 +/-    0.28      15.8 +/-    0.28  0.180 / 0.260
G24     124.2          11.9               18.9 +/-    3.53      50.6 +/-    3.53  0.180 / 0.170
G27     319.2          17.7               12.7 +/-    1.84      29.6 +/-    1.84  0.060 / 0.080
G29     165.9          30.8               16.5 +/-    0.87      28.4 +/-    0.87  0.080 / 0.080