PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-21:57:40
G08     320.6          11.2               -3.6 +/-   32.62      -9.9 +/-   32.62  0.030 / 0.040
G10     303.5          53.8                8.0 +/-    1.09       9.6 +/-    1.09  0.030 / 0.030
G14     211.3          14.7               11.0 +/-    2.35      27.5 +/-    2.35  0.150 / 0.540
G15     46.2           29.6                7.3 +/-    1.13      12.8 +/-    1.13  0.190 / 0.410
G20     1.8            65.0                8.3 +/-    0.60       9.1 +/-    0.60  0.100 / 0.070
G21     107.7          71.5                9.8 +/-    0.48      10.3 +/-    0.48  0.080 / 0.080
G24     90.4           27.4                9.1 +/-    1.05      16.8 +/-    1.05  0.120 / 0.140
G27     297.1          35.1                8.7 +/-    3.47      13.8 +/-    3.47  0.100 / 0.140
G32     212.1          36.9               10.8 +/-    1.61      16.5 +/-    1.61  0.310 / 0.350