PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-16:42:40
G05     46.7           24.6                7.3 +/-    2.59      14.5 +/-    2.59  0.130 / 0.440
G13     82.0           36.1                8.7 +/-    0.52      13.5 +/-    0.52  0.090 / 0.580
G15     136.3          48.0               10.3 +/-    1.40      13.3 +/-    1.40  0.050 / 0.110
G16     318.4          10.3               -6.7 +/-   13.02     -18.5 +/-   13.02  0.060 / 0.100
G20     243.7          33.0               12.1 +/-    1.66      19.9 +/-    1.66  0.110 / 0.350
G21     309.5          44.7                7.8 +/-    1.06      10.5 +/-    1.06  0.170 / 0.560
G25     198.9          13.1               10.2 +/-    2.23      26.5 +/-    2.23  0.050 / 0.120
G26     293.5          20.1               10.2 +/-    2.12      22.3 +/-    2.12  0.050 / 0.120
G29     148.3          78.0                8.3 +/-    0.78       8.5 +/-    0.78  0.070 / 0.120