PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-20:28:00
G01     240.8          32.0               28.0 +/-    1.70      47.0 +/-    1.70  0.040 / 0.050
G03     314.9          48.4                7.6 +/-    1.90       9.7 +/-    1.90  0.040 / 0.040
G14     63.0           40.6                9.1 +/-    0.77      13.1 +/-    0.77  0.110 / 0.250
G16     158.1          24.5               12.1 +/-    1.02      23.9 +/-    1.02  0.080 / 0.270
G22     294.4          70.1                8.9 +/-    0.66       9.4 +/-    0.66  0.080 / 0.130
G23     291.1          22.9                8.9 +/-    1.99      18.2 +/-    1.99  0.070 / 0.120
G26     130.6          42.9               11.7 +/-    0.98      16.3 +/-    0.98  0.050 / 0.090
G31     41.0           52.7                6.9 +/-    0.54       8.4 +/-    0.54  0.060 / 0.130
G32     82.7           17.5                9.0 +/-    1.59      21.1 +/-    1.59  0.040 / 0.060