PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-15:57:50
G08     297.2          23.4                6.4 +/-    2.14      13.0 +/-    2.14  0.050 / 0.080
G10     356.7          62.5                5.5 +/-    0.72       6.2 +/-    0.72  0.050 / 0.080
G14     225.0          42.1                8.6 +/-    1.48      12.1 +/-    1.48  0.060 / 0.120
G20     57.3           55.1                6.9 +/-    0.60       8.2 +/-    0.60  0.060 / 0.120
G21     142.8          41.9               10.8 +/-    0.75      15.3 +/-    0.75  0.050 / 0.110
G24     58.1           25.3                7.1 +/-    1.43      13.9 +/-    1.43  0.050 / 0.080
G27     264.1          34.1                7.4 +/-    1.31      11.9 +/-    1.31  0.030 / 0.040
G32     235.4          61.5                8.7 +/-    0.78       9.8 +/-    0.78  0.030 / 0.040