PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-00:42:30
G08     301.0          22.3               11.1 +/-    1.71      23.0 +/-    1.71  0.040 / 0.060
G10     345.5          61.7               11.5 +/-    0.68      12.9 +/-    0.68  0.040 / 0.070
G14     223.0          39.8               15.8 +/-    2.11      23.1 +/-    2.11  0.050 / 0.080
G18     50.0           56.2               12.6 +/-    0.51      14.8 +/-    0.51  0.060 / 0.090
G21     140.4          48.5               17.2 +/-    0.87      22.1 +/-    0.87  0.040 / 0.040
G24     66.7           29.6               13.8 +/-    0.56      24.3 +/-    0.56  0.030 / 0.040
G27     263.0          35.5               15.7 +/-    1.27      24.6 +/-    1.27  0.060 / 0.100
G32     231.3          57.2               15.4 +/-    0.72      18.0 +/-    0.72  0.060 / 0.110