PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/21-00:12:30
G08     288.3          23.5               12.7 +/-    1.22      25.8 +/-    1.22  0.020 / 0.030
G10     12.5           63.3               13.4 +/-    0.40      14.8 +/-    0.40  0.020 / 0.020
G14     233.6          50.9               13.5 +/-    2.28      16.9 +/-    2.28  0.040 / 0.090
G18     67.4           49.6               12.7 +/-    0.98      16.1 +/-    0.98  0.040 / 0.100
G21     147.4          35.6               12.5 +/-    0.53      19.6 +/-    0.53  0.170 / 0.170
G24     54.4           25.2               11.4 +/-    3.40      22.2 +/-    3.40  0.210 / 0.090
G27     249.2          29.6               14.6 +/-    1.73      25.8 +/-    1.73  0.090 / 0.090
G32     250.4          67.3               13.4 +/-    0.68      14.4 +/-    0.68  0.060 / 0.070