PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-00:42:40
G08     285.6          23.3                9.6 +/-    0.99      19.4 +/-    0.99  0.090 / 0.120
G10     18.1           63.3                8.7 +/-    0.65       9.7 +/-    0.65  0.100 / 0.130
G14     236.3          53.1                9.6 +/-    0.71      11.7 +/-    0.71  0.030 / 0.030
G18     70.3           48.4               10.4 +/-    0.76      13.4 +/-    0.76  0.040 / 0.030
G21     148.5          33.3               11.2 +/-    1.43      18.3 +/-    1.43  0.070 / 0.120
G24     52.3           24.0                9.6 +/-    0.91      19.2 +/-    0.91  0.070 / 0.130
G27     246.8          28.2               11.7 +/-    1.11      21.2 +/-    1.11  0.030 / 0.030
G32     256.4          69.4               10.7 +/-    0.45      11.4 +/-    0.45  0.030 / 0.030