PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/20-00:57:30
G08     301.7          22.2                8.8 +/-    1.38      18.4 +/-    1.38  0.060 / 0.090
G10     346.9          61.9                9.0 +/-    0.61      10.0 +/-    0.61  0.080 / 0.070
G14     222.4          36.5               13.2 +/-    2.44      20.4 +/-    2.44  0.040 / 0.050
G20     332.8          61.0                8.7 +/-    0.87       9.8 +/-    0.87  0.050 / 0.050
G21     140.7          51.2               10.4 +/-    0.42      12.9 +/-    0.42  0.060 / 0.090
G24     64.2           27.9                8.4 +/-    0.97      15.4 +/-    0.97  0.100 / 0.090
G27     265.9          35.7               10.7 +/-    2.20      16.8 +/-    2.20  0.080 / 0.140
G32     231.1          61.3               10.9 +/-    1.60      12.2 +/-    1.60  0.090 / 0.110