PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-00:27:50
G08     269.8          19.7                8.1 +/-    2.58      18.0 +/-    2.58  0.220 / 0.430
G10     54.2           59.6                9.6 +/-    0.83      11.0 +/-    0.83  0.190 / 0.260
G14     257.6          63.0                9.3 +/-    0.70      10.3 +/-    0.70  0.050 / 0.050
G18     314.0          29.3                7.5 +/-    1.87      13.3 +/-    1.87  0.040 / 0.040
G20     91.4           39.3                8.1 +/-    1.26      12.0 +/-    1.26  0.120 / 0.300
G21     154.1          19.2                9.5 +/-    2.85      21.2 +/-    2.85  0.080 / 0.220
G24     40.3           10.8                7.5 +/-    2.23      20.6 +/-    2.23  0.120 / 0.270
G27     235.7          18.7               10.3 +/-    4.70      23.3 +/-    4.70  0.120 / 0.250
G31     178.6          27.0               11.1 +/-    1.09      20.8 +/-    1.09  0.170 / 0.300
G32     329.2          75.7                8.7 +/-    0.64       9.0 +/-    0.64  0.160 / 0.220