PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-23:13:00
G08     303.0          21.7               21.5 +/-    1.90      45.4 +/-    1.90  0.030 / 0.030
G10     341.8          61.3               22.3 +/-    0.64      25.1 +/-    0.64  0.030 / 0.030
G14     221.7          37.8               30.2 +/-    1.67      45.5 +/-    1.67  0.070 / 0.080
G18     48.1           56.7               24.3 +/-    0.85      28.4 +/-    0.85  0.070 / 0.060
G21     139.0          49.5               25.0 +/-    0.89      31.7 +/-    0.89  0.030 / 0.050
G24     68.8           30.0               22.3 +/-    2.06      39.0 +/-    2.06  0.040 / 0.050
G27     265.3          36.1               27.1 +/-    0.84      42.1 +/-    0.84  0.080 / 0.090
G32     229.1          54.6               28.0 +/-    2.55      33.5 +/-    2.55  0.080 / 0.080