PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-22:12:40
G10     252.0          27.0               18.9 +/-    1.59      35.2 +/-    1.59  0.040 / 0.040
G13     53.3           30.6               17.4 +/-    1.16      30.1 +/-    1.16  0.040 / 0.050
G15     84.2           57.4               18.4 +/-    0.48      21.4 +/-    0.48  0.130 / 0.300
G16     296.9          14.1               15.9 +/-    1.58      40.4 +/-    1.58  0.130 / 0.380
G18     271.5          56.8               17.6 +/-    0.64      20.5 +/-    0.64  0.080 / 0.300
G20     44.3           46.5               15.5 +/-    0.34      20.5 +/-    0.34  0.080 / 0.350
G21     337.0          62.1               17.4 +/-    0.42      19.4 +/-    0.42  0.080 / 0.120
G26     269.4          14.7               17.8 +/-    0.85      44.5 +/-    0.85  0.080 / 0.150
G29     163.7          44.3               19.4 +/-    1.03      26.4 +/-    1.03  0.060 / 0.080