PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/16-17:28:00
G10     282.9          46.6                9.6 +/-    2.20      12.6 +/-    2.20  0.040 / 0.030
G15     50.0           39.9                7.0 +/-    1.28      10.2 +/-    1.28  0.030 / 0.030
G20     326.7          64.6                8.7 +/-    0.68       9.5 +/-    0.68  0.080 / 0.150
G21     59.5           76.4                9.7 +/-    0.61       9.9 +/-    0.61  0.090 / 0.140
G24     104.3          21.7                9.4 +/-    1.56      19.9 +/-    1.56  0.060 / 0.080
G27     311.8          26.9                7.5 +/-    1.51      14.1 +/-    1.51  0.090 / 0.070
G29     168.0          17.0                9.2 +/-    1.57      21.7 +/-    1.57  0.080 / 0.120
G32     206.9          21.4                9.6 +/-    1.96      20.5 +/-    1.96  0.110 / 0.090