PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-20:12:50
G01     221.1          11.7               11.0 +/-    4.43      29.6 +/-    4.43  0.090 / 0.240
G03     258.0          70.8                9.8 +/-    0.48      10.3 +/-    0.48  0.090 / 0.230
G09     298.4          11.6               10.2 +/-    5.79      27.5 +/-    5.79  0.050 / 0.050
G14     93.0           20.2               10.5 +/-    1.17      22.9 +/-    1.17  0.050 / 0.050
G16     141.3          52.0               13.7 +/-    0.82      16.8 +/-    0.82  0.080 / 0.100
G22     201.4          63.4               10.9 +/-    1.31      12.0 +/-    1.31  0.070 / 0.080
G23     313.6          43.4                9.5 +/-    1.00      13.1 +/-    1.00  0.080 / 0.360
G26     83.0           54.4                8.5 +/-    0.39      10.2 +/-    0.39  0.080 / 0.330
G31     48.3           25.9                8.2 +/-    0.76      15.8 +/-    0.76  0.070 / 0.110