PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/21-23:43:00
G08     300.5          22.4               11.7 +/-    0.58      24.2 +/-    0.58  0.030 / 0.030
G10     346.8          61.9               11.5 +/-    0.69      12.8 +/-    0.69  0.030 / 0.020
G14     223.4          40.2               15.8 +/-    1.48      22.9 +/-    1.48  0.050 / 0.080
G18     51.5           55.6               12.5 +/-    0.71      14.8 +/-    0.71  0.060 / 0.080
G21     140.8          47.3               14.5 +/-    0.47      19.0 +/-    0.47  0.100 / 0.050
G24     66.0           29.5               11.9 +/-    0.99      21.0 +/-    0.99  0.060 / 0.040
G27     262.3          35.3               15.8 +/-    2.10      24.9 +/-    2.10  0.080 / 0.090
G32     231.9          57.1               13.3 +/-    1.75      15.5 +/-    1.75  0.090 / 0.100