PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-20:58:10
G08     319.1          12.6               13.8 +/-    1.57      36.5 +/-    1.57  0.070 / 0.080
G10     306.2          54.2               14.6 +/-    0.99      17.5 +/-    0.99  0.080 / 0.080
G14     212.1          18.9               20.0 +/-    2.13      45.3 +/-    2.13  0.050 / 0.050
G15     45.5           22.2               11.7 +/-    1.40      24.5 +/-    1.40  0.050 / 0.050
G18     13.9           64.3               13.2 +/-    0.38      14.5 +/-    0.38  0.110 / 0.250
G20     75.9           14.4               12.6 +/-    1.61      31.9 +/-    1.61  0.080 / 0.290
G21     115.5          66.9               15.7 +/-    0.43      16.9 +/-    0.43  0.040 / 0.040
G24     91.9           28.8               15.6 +/-    1.53      28.1 +/-    1.53  0.040 / 0.050
G27     291.3          37.2               15.2 +/-    1.86      23.2 +/-    1.86  0.080 / 0.080
G32     214.3          35.6               20.5 +/-    1.19      32.2 +/-    1.19  0.080 / 0.090