PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-22:12:30
G08     289.4          23.3               11.6 +/-    1.00      23.5 +/-    1.00  0.100 / 0.120
G10     11.3           63.2               11.8 +/-    0.41      13.1 +/-    0.41  0.090 / 0.130
G14     232.9          50.0               19.0 +/-    1.63      24.0 +/-    1.63  0.040 / 0.040
G18     67.3           49.4               13.1 +/-    0.92      16.7 +/-    0.92  0.040 / 0.030
G21     146.9          35.0               15.2 +/-    1.56      24.1 +/-    1.56  0.040 / 0.110
G24     54.9           25.5               12.0 +/-    0.86      23.2 +/-    0.86  0.050 / 0.110
G27     249.9          30.0               14.3 +/-    1.57      25.1 +/-    1.57  0.030 / 0.030
G32     249.2          66.9               13.5 +/-    0.85      14.5 +/-    0.85  0.040 / 0.040