PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-15:57:50
G08     293.9          23.6                6.7 +/-    0.66      13.4 +/-    0.66  0.080 / 0.090
G10     9.2            62.6                6.9 +/-    0.98       7.7 +/-    0.98  0.110 / 0.140
G14     227.5          41.1                9.4 +/-    1.48      13.5 +/-    1.48  0.060 / 0.110
G20     67.4           50.0                8.3 +/-    1.33      10.4 +/-    1.33  0.060 / 0.090
G21     145.9          40.7               11.0 +/-    1.19      15.8 +/-    1.19  0.060 / 0.070
G24     58.5           26.9                6.0 +/-    1.36      11.3 +/-    1.36  0.050 / 0.080
G27     255.6          32.9                8.0 +/-    2.47      13.2 +/-    2.47  0.090 / 0.120
G32     243.4          68.7                7.9 +/-    0.49       8.4 +/-    0.49  0.090 / 0.150