PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-15:28:10
G05     49.8           15.9                7.0 +/-    1.32      16.9 +/-    1.32  0.120 / 0.320
G10     238.7          15.9                8.8 +/-    1.54      21.3 +/-    1.54  0.120 / 0.330
G13     70.4           35.5                8.8 +/-    1.14      13.9 +/-    1.14  0.030 / 0.060
G15     121.7          54.6                8.4 +/-    0.76      10.0 +/-    0.76  0.050 / 0.040
G16     311.3          13.2                5.2 +/-    5.22      13.6 +/-    5.22  0.030 / 0.030
G20     251.9          40.0                8.8 +/-    1.26      12.7 +/-    1.26  0.030 / 0.030
G21     319.2          51.2                6.9 +/-    0.75       8.6 +/-    0.75  0.070 / 0.210
G26     285.1          19.4                6.4 +/-    0.78      14.4 +/-    0.78  0.160 / 0.180
G29     156.9          67.0               10.2 +/-    0.65      11.0 +/-    0.65  0.180 / 0.220