PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-21:28:00
G08     304.5          21.2               11.8 +/-    2.23      25.1 +/-    2.23  0.060 / 0.080
G10     339.4          61.0               13.1 +/-    1.17      14.8 +/-    1.17  0.060 / 0.080
G14     220.9          36.4               18.0 +/-    1.05      27.8 +/-    1.05  0.040 / 0.060
G18     47.1           56.9               13.6 +/-    0.67      15.9 +/-    0.67  0.040 / 0.060
G21     138.0          49.6               14.9 +/-    1.39      18.9 +/-    1.39  0.060 / 0.080
G24     70.1           30.2               13.7 +/-    0.70      24.0 +/-    0.70  0.060 / 0.100
G27     267.0          36.5               16.8 +/-    1.02      25.9 +/-    1.02  0.060 / 0.050
G32     227.8          53.9               17.2 +/-    0.85      20.8 +/-    0.85  0.040 / 0.050