PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-22:57:50
G08     291.2          23.4               15.4 +/-    0.92      31.2 +/-    0.92  0.040 / 0.110
G10     7.1            63.2               13.8 +/-    0.65      15.3 +/-    0.65  0.040 / 0.090
G14     231.1          48.5               20.0 +/-    0.63      25.7 +/-    0.63  0.030 / 0.030
G18     64.7           50.6               15.9 +/-    1.10      19.9 +/-    1.10  0.040 / 0.030
G21     146.1          37.4               18.7 +/-    0.63      28.4 +/-    0.63  0.050 / 0.130
G24     56.6           26.3               14.3 +/-    0.80      27.0 +/-    0.80  0.060 / 0.090
G27     251.8          31.0               18.9 +/-    1.26      32.5 +/-    1.26  0.070 / 0.070
G32     245.2          64.9               17.6 +/-    0.93      19.2 +/-    0.93  0.070 / 0.080