PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/20-20:12:40
G01     233.2          23.3               11.3 +/-    2.62      22.9 +/-    2.62  0.040 / 0.030
G03     302.4          62.8               10.4 +/-    0.76      11.5 +/-    0.76  0.030 / 0.030
G14     78.4           30.1               10.3 +/-    0.76      18.0 +/-    0.76  0.050 / 0.060
G16     155.2          35.4                6.0 +/-    1.02       9.5 +/-    1.02  0.050 / 0.080
G22     245.5          75.6                9.7 +/-    0.78      10.0 +/-    0.78  0.060 / 0.130
G23     300.9          31.5               10.0 +/-    1.67      16.9 +/-    1.67  0.080 / 0.110
G26     113.8          51.2               12.8 +/-    0.70      15.9 +/-    0.70  0.150 / 0.280
G31     42.1           40.4                8.1 +/-    1.30      11.7 +/-    1.30  0.090 / 0.310
G32     92.7           11.3               11.0 +/-    1.98      29.9 +/-    1.98  0.100 / 0.240