PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-04:43:00
G10     245.3          21.8                7.9 +/-    2.68      16.6 +/-    2.68  0.120 / 0.370
G13     60.3           33.3                6.9 +/-    2.11      11.3 +/-    2.11  0.110 / 0.440
G15     99.9           57.6                9.4 +/-    0.93      10.9 +/-    0.93  0.040 / 0.050
G16     301.4          15.5                3.4 +/-    2.71       8.4 +/-    2.71  0.050 / 0.050
G20     282.7          65.6                6.2 +/-    0.52       6.7 +/-    0.52  0.060 / 0.100
G21     325.7          55.4                5.8 +/-    0.42       6.8 +/-    0.42  0.070 / 0.130
G26     272.8          18.1                7.2 +/-    1.69      16.6 +/-    1.69  0.040 / 0.050
G29     163.1          58.0                9.7 +/-    0.45      11.2 +/-    0.45  0.030 / 0.050