PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-10:12:30
G02     346.3          78.5                5.6 +/-    0.49       5.7 +/-    0.49  0.110 / 0.110
G05     167.6          29.9                7.8 +/-    1.94      13.7 +/-    1.94  0.090 / 0.120
G06     40.9           40.9                4.3 +/-    0.92       6.2 +/-    0.92  0.030 / 0.030
G12     312.9          73.3                6.1 +/-    0.91       6.3 +/-    0.91  0.030 / 0.030
G17     84.4           11.9                6.3 +/-    0.85      16.8 +/-    0.85  0.080 / 0.220
G19     74.2           26.0                4.0 +/-    2.42       7.6 +/-    2.42  0.080 / 0.110
G24     230.9          23.9                7.1 +/-    1.47      14.2 +/-    1.47  0.080 / 0.120
G25     317.0          27.1                4.4 +/-    1.34       8.2 +/-    1.34  0.080 / 0.110