PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/25-19:58:00
G10     283.0          45.8               15.1 +/-    1.21      20.1 +/-    1.21  0.040 / 0.050
G15     48.8           36.5               12.3 +/-    0.36      18.9 +/-    0.36  0.040 / 0.050
G18     336.4          67.1               13.3 +/-    0.55      14.4 +/-    0.55  0.080 / 0.110
G20     64.0           25.4               13.4 +/-    1.11      25.9 +/-    1.11  0.070 / 0.110
G21     66.3           75.9               14.0 +/-    1.10      14.4 +/-    1.10  0.070 / 0.180
G24     109.2          21.9               18.3 +/-    0.90      38.4 +/-    0.90  0.070 / 0.170
G27     308.7          30.0               13.2 +/-    1.37      23.1 +/-    1.37  0.120 / 0.160
G29     166.1          11.8               17.5 +/-    3.21      46.9 +/-    3.21  0.110 / 0.200
G32     208.0          19.9               18.3 +/-    1.33      40.4 +/-    1.33  0.070 / 0.180