PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/08-17:57:30
G08     284.8          23.7               12.4 +/-    1.57      25.0 +/-    1.57  0.030 / 0.040
G10     22.4           62.7               12.4 +/-    0.43      13.8 +/-    0.43  0.030 / 0.030
G14     235.8          52.4               14.2 +/-    1.27      17.4 +/-    1.27  0.050 / 0.130
G20     73.8           48.7               13.8 +/-    0.39      17.7 +/-    0.39  0.060 / 0.150
G21     148.8          31.4               16.7 +/-    1.45      28.4 +/-    1.45  0.090 / 0.130
G24     47.8           19.0               12.7 +/-    0.84      28.5 +/-    0.84  0.080 / 0.140
G27     250.7          28.6               12.7 +/-    1.32      22.9 +/-    1.32  0.090 / 0.120
G32     259.6          71.7               13.9 +/-    0.66      14.5 +/-    0.66  0.090 / 0.120