PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/07-03:13:10
G10     245.6          22.3               19.1 +/-    2.77      39.8 +/-    2.77  0.110 / 0.320
G13     59.7           33.0               12.4 +/-    2.18      20.4 +/-    2.18  0.100 / 0.390
G15     100.3          57.9               16.3 +/-    1.31      18.9 +/-    1.31  0.060 / 0.050
G16     300.7          15.7                9.4 +/-    1.64      23.0 +/-    1.64  0.040 / 0.050
G20     267.9          54.6               15.0 +/-    1.67      17.9 +/-    1.67  0.050 / 0.090
G21     325.9          55.5               13.4 +/-    0.67      15.9 +/-    0.67  0.080 / 0.130
G26     272.2          17.9               15.0 +/-    1.57      34.8 +/-    1.57  0.030 / 0.030
G29     163.4          57.7               16.3 +/-    0.62      18.9 +/-    0.62  0.020 / 0.030