PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-18:58:10
G08     304.4          21.0                9.4 +/-    2.14      20.1 +/-    2.14  0.060 / 0.190
G10     349.5          62.0                9.8 +/-    0.61      10.9 +/-    0.61  0.070 / 0.150
G14     221.4          32.8               13.9 +/-    1.30      23.0 +/-    1.30  0.130 / 0.280
G20     52.8           55.8               10.9 +/-    0.41      12.9 +/-    0.41  0.120 / 0.330
G21     140.3          50.9               13.9 +/-    0.94      17.3 +/-    0.94  0.070 / 0.100
G24     68.0           29.8               10.8 +/-    0.53      18.9 +/-    0.53  0.070 / 0.090
G27     266.4          36.4               12.7 +/-    0.92      19.6 +/-    0.92  0.050 / 0.060
G32     229.3          60.1               14.3 +/-    0.62      16.3 +/-    0.62  0.050 / 0.070