PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-22:12:40
G08     310.6          18.9                8.5 +/-    1.77      19.3 +/-    1.77  0.040 / 0.050
G10     327.9          59.4                8.3 +/-    0.49       9.5 +/-    0.49  0.040 / 0.050
G14     216.8          27.9               14.2 +/-    1.42      26.0 +/-    1.42  0.060 / 0.070
G15     46.5           17.0                6.8 +/-    2.14      16.0 +/-    2.14  0.060 / 0.070
G20     32.9           61.4                8.9 +/-    0.56      10.0 +/-    0.56  0.070 / 0.080
G21     131.8          59.2               11.5 +/-    0.75      13.1 +/-    0.75  0.070 / 0.080
G24     74.0           29.0                8.5 +/-    1.42      15.3 +/-    1.42  0.030 / 0.030
G27     279.4          37.3               11.4 +/-    1.42      17.3 +/-    1.42  0.030 / 0.030
G32     221.0          51.0               12.2 +/-    1.46      15.2 +/-    1.46  0.170 / 0.280