PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/24-21:57:50
G03     241.2          68.7                8.6 +/-    0.43       9.2 +/-    0.43  0.040 / 0.050
G09     303.4          19.2                7.8 +/-    1.46      17.5 +/-    1.46  0.050 / 0.060
G14     99.1           14.3               10.1 +/-    1.73      25.7 +/-    1.73  0.030 / 0.060
G16     130.6          57.7               10.2 +/-    0.39      11.9 +/-    0.39  0.030 / 0.040
G22     196.6          56.4                8.8 +/-    1.68      10.3 +/-    1.68  0.100 / 0.380
G23     317.0          46.5                8.0 +/-    0.89      10.5 +/-    0.89  0.100 / 0.330
G26     74.2           54.0                8.4 +/-    0.60      10.1 +/-    0.60  0.040 / 0.050
G31     50.6           24.1                6.7 +/-    0.66      13.4 +/-    0.66  0.040 / 0.060