PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-23:42:40
G08     269.6          19.8                9.7 +/-    2.16      21.5 +/-    2.16  0.160 / 0.270
G10     54.3           59.6                9.5 +/-    0.92      10.8 +/-    0.92  0.160 / 0.250
G14     257.9          63.3                9.5 +/-    1.01      10.5 +/-    1.01  0.190 / 0.350
G18     313.9          29.5                8.8 +/-    2.44      15.5 +/-    2.44  0.140 / 0.300
G20     91.4           39.2                9.1 +/-    0.96      13.4 +/-    0.96  0.090 / 0.250
G21     154.0          18.9               11.0 +/-    3.03      24.9 +/-    3.03  0.110 / 0.290
G24     40.2           10.6                5.6 +/-    3.52      15.4 +/-    3.52  0.030 / 0.030
G27     235.8          18.8               12.2 +/-    5.09      27.6 +/-    5.09  0.030 / 0.030
G31     178.8          26.7               13.6 +/-    1.62      25.6 +/-    1.62  0.050 / 0.050
G32     328.5          75.7                9.2 +/-    0.60       9.4 +/-    0.60  0.040 / 0.050