PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-20:27:40
G01     240.8          32.0               25.2 +/-    1.72      42.4 +/-    1.72  0.040 / 0.040
G03     314.9          48.4                8.4 +/-    0.72      10.8 +/-    0.72  0.040 / 0.040
G14     63.0           40.6                8.7 +/-    1.01      12.6 +/-    1.01  0.050 / 0.090
G16     158.1          24.5               11.8 +/-    3.63      23.3 +/-    3.63  0.060 / 0.090
G22     294.4          70.1                7.8 +/-    1.02       8.2 +/-    1.02  0.070 / 0.130
G23     291.1          22.9                9.2 +/-    2.81      18.9 +/-    2.81  0.090 / 0.180
G26     130.6          42.9               11.3 +/-    0.47      15.7 +/-    0.47  0.050 / 0.060
G31     41.0           52.7                7.7 +/-    0.77       9.5 +/-    0.77  0.060 / 0.050
G32     82.7           17.5                9.3 +/-    2.10      21.7 +/-    2.10  0.110 / 0.260