PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/19-20:12:40
G08     315.1          16.2                9.8 +/-    2.94      23.6 +/-    2.94  0.060 / 0.080
G10     317.0          57.3               11.1 +/-    0.72      13.0 +/-    0.72  0.050 / 0.090
G14     214.0          22.7               12.3 +/-    1.23      25.4 +/-    1.23  0.030 / 0.040
G15     45.9           21.0                6.6 +/-    1.33      14.1 +/-    1.33  0.030 / 0.050
G20     20.3           63.3                8.1 +/-    0.52       9.0 +/-    0.52  0.130 / 0.270
G21     124.0          64.1               12.1 +/-    0.90      13.3 +/-    0.90  0.090 / 0.350
G24     80.4           28.6                8.6 +/-    0.99      15.4 +/-    0.99  0.060 / 0.140
G27     287.8          36.8                8.8 +/-    1.35      13.4 +/-    1.35  0.060 / 0.130
G32     216.6          44.4               13.8 +/-    1.04      18.7 +/-    1.04  0.160 / 0.330