PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-17:57:50
G01     311.8          31.0                7.4 +/-    1.11      12.7 +/-    1.11  0.120 / 0.170
G10     98.2           43.0                9.2 +/-    0.61      12.7 +/-    0.61  0.090 / 0.180
G11     294.3          24.4                7.8 +/-    1.68      15.4 +/-    1.68  0.040 / 0.040
G14     324.8          70.0                7.1 +/-    0.46       7.5 +/-    0.46  0.040 / 0.040
G20     116.6          16.3                8.1 +/-    1.97      19.5 +/-    1.97  0.170 / 0.240
G22     307.1          19.1                7.1 +/-    1.80      16.0 +/-    1.80  0.180 / 0.300
G25     89.4           13.5               10.2 +/-    2.45      26.2 +/-    2.45  0.050 / 0.200
G31     172.3          55.6                9.1 +/-    0.64      10.7 +/-    0.64  0.060 / 0.060
G32     29.8           56.6                7.2 +/-    1.10       8.4 +/-    1.10  0.040 / 0.040