PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-20:13:10
G01     243.5          31.6               11.8 +/-    1.66      20.0 +/-    1.66  0.090 / 0.120
G03     314.1          50.5                8.9 +/-    0.93      11.2 +/-    0.93  0.120 / 0.150
G14     67.5           36.1                7.8 +/-    0.90      12.1 +/-    0.90  0.050 / 0.080
G16     160.8          23.5               10.2 +/-    1.19      20.7 +/-    1.19  0.060 / 0.070
G18     212.6          20.7               11.3 +/-    1.86      24.5 +/-    1.86  0.070 / 0.280
G22     291.8          71.6                8.6 +/-    0.75       9.1 +/-    0.75  0.080 / 0.240
G23     290.9          21.8                8.9 +/-    1.84      18.7 +/-    1.84  0.050 / 0.120
G26     133.7          42.6               11.7 +/-    0.75      16.3 +/-    0.75  0.050 / 0.130
G31     39.4           56.6                7.4 +/-    0.61       8.7 +/-    0.61  0.050 / 0.040
G32     82.2           19.9                8.2 +/-    0.84      18.1 +/-    0.84  0.050 / 0.040