PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-20:42:40
G08     309.6          19.1               12.4 +/-    1.91      27.8 +/-    1.91  0.070 / 0.070
G10     328.7          59.4               10.3 +/-    0.92      11.8 +/-    0.92  0.060 / 0.080
G14     217.7          31.0               15.8 +/-    2.63      27.1 +/-    2.63  0.300 / 0.310
G15     46.6           10.9               10.2 +/-    0.99      27.9 +/-    0.99  0.060 / 0.080
G18     38.6           59.3               10.5 +/-    0.62      12.0 +/-    0.62  0.040 / 0.060
G21     133.2          54.6               12.6 +/-    0.53      15.1 +/-    0.53  0.030 / 0.060
G24     76.5           30.6               11.7 +/-    0.43      20.2 +/-    0.43  0.040 / 0.050
G27     274.2          37.7               12.3 +/-    1.15      18.6 +/-    1.15  0.030 / 0.060
G32     222.8          48.8               12.3 +/-    0.48      15.7 +/-    0.48  0.080 / 0.180