PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-21:57:50
G01     239.4          28.7                9.4 +/-    2.29      17.0 +/-    2.29  0.040 / 0.030
G03     311.7          54.1                7.8 +/-    0.60       9.4 +/-    0.60  0.040 / 0.050
G14     71.7           33.6                7.9 +/-    1.24      12.8 +/-    1.24  0.080 / 0.170
G16     157.8          28.3               14.1 +/-    1.04      25.6 +/-    1.04  0.080 / 0.190
G22     279.8          73.7                8.7 +/-    0.63       9.1 +/-    0.63  0.060 / 0.140
G23     294.1          24.6                9.2 +/-    1.89      18.2 +/-    1.89  0.060 / 0.140
G26     127.1          46.3               13.0 +/-    1.35      17.2 +/-    1.35  0.040 / 0.050
G31     40.0           50.6                6.9 +/-    0.39       8.7 +/-    0.39  0.040 / 0.060
G32     86.2           16.6                8.8 +/-    1.04      21.1 +/-    1.04  0.070 / 0.150