PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/18-19:57:40
G08     320.7          11.2               -1.6 +/-   33.32      -4.3 +/-   33.32  0.070 / 0.100
G10     302.8          53.7                7.5 +/-    1.21       9.1 +/-    1.21  0.070 / 0.090
G14     211.0          14.7                7.9 +/-    2.72      19.8 +/-    2.72  0.030 / 0.040
G15     46.1           28.6                5.9 +/-    1.03      10.7 +/-    1.03  0.030 / 0.040
G20     0.6            65.1                8.0 +/-    1.09       8.7 +/-    1.09  0.200 / 0.550
G21     107.2          71.1                8.5 +/-    0.76       8.9 +/-    0.76  0.160 / 0.610
G24     90.3           27.1               10.3 +/-    0.61      19.2 +/-    0.61  0.150 / 0.360
G27     298.2          34.6                8.3 +/-    2.11      13.2 +/-    2.11  0.150 / 0.320
G32     211.9          35.8               10.9 +/-    2.12      17.1 +/-    2.12  0.080 / 0.120