PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-05:42:30
G10     246.2          22.7                7.1 +/-    1.53      14.6 +/-    1.53  0.130 / 0.620
G13     59.1           32.9                4.7 +/-    0.63       7.8 +/-    0.63  0.170 / 0.610
G15     96.7           57.5                5.3 +/-    0.55       6.2 +/-    0.55  0.040 / 0.050
G16     300.5          15.5                2.9 +/-    2.20       7.2 +/-    2.20  0.040 / 0.050
G20     305.4          71.5                4.7 +/-    0.51       4.9 +/-    0.51  0.090 / 0.260
G21     327.3          56.4                3.4 +/-    0.80       4.0 +/-    0.80  0.100 / 0.170
G26     271.7          17.6                4.7 +/-    1.56      10.9 +/-    1.56  0.030 / 0.050
G29     163.4          56.3                6.7 +/-    1.12       7.9 +/-    1.12  0.040 / 0.040