PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-21:57:50
G08     320.6          11.2               -0.8 +/-   32.38      -2.3 +/-   32.38  0.100 / 0.100
G10     303.5          53.8                8.1 +/-    1.03       9.8 +/-    1.03  0.080 / 0.090
G14     211.3          14.7               11.4 +/-    2.50      28.5 +/-    2.50  0.030 / 0.040
G15     46.2           29.6                6.2 +/-    0.91      11.0 +/-    0.91  0.030 / 0.040
G20     1.8            65.0                7.6 +/-    0.65       8.3 +/-    0.65  0.190 / 0.760
G21     107.7          71.5               10.1 +/-    0.87      10.6 +/-    0.87  0.170 / 0.730
G24     90.4           27.4                9.8 +/-    0.63      18.1 +/-    0.63  0.120 / 0.160
G27     297.1          35.1                8.8 +/-    1.08      14.0 +/-    1.08  0.100 / 0.130
G32     212.1          36.9               11.1 +/-    1.64      17.0 +/-    1.64  0.110 / 0.360