PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/23-18:57:30
G10     251.0          26.2               12.7 +/-    1.02      24.2 +/-    1.02  0.050 / 0.070
G13     54.1           30.9               13.3 +/-    0.99      22.8 +/-    0.99  0.050 / 0.060
G15     84.3           56.8               13.6 +/-    0.78      15.9 +/-    0.78  0.100 / 0.260
G16     300.3          13.4               10.4 +/-    2.23      26.9 +/-    2.23  0.100 / 0.240
G18     270.9          57.1               13.8 +/-    0.72      16.1 +/-    0.72  0.050 / 0.130
G20     42.5           48.8               11.5 +/-    0.74      14.7 +/-    0.74  0.070 / 0.150
G26     272.4          14.9               12.3 +/-    1.67      30.6 +/-    1.67  0.120 / 0.330
G29     162.2          43.3               14.1 +/-    1.26      19.4 +/-    1.26  0.110 / 0.340