PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-05:43:10
G10     261.3          34.4                5.9 +/-    1.71       9.5 +/-    1.71  0.130 / 0.440
G13     45.0           22.6                5.2 +/-    2.77      10.6 +/-    2.77  0.150 / 0.450
G15     65.8           52.4                6.0 +/-    0.63       7.4 +/-    0.63  0.170 / 0.260
G16     283.6          13.7                3.6 +/-    1.65       9.2 +/-    1.65  0.120 / 0.230
G20     343.0          69.5                5.3 +/-    0.51       5.6 +/-    0.51  0.040 / 0.030
G21     350.4          68.1                5.3 +/-    0.57       5.7 +/-    0.57  0.040 / 0.030
G24     124.7          11.0                2.8 +/-   15.44       7.6 +/-   15.44  0.300 / 0.330
G27     320.6          14.9                2.1 +/-    2.51       5.3 +/-    2.51  0.310 / 0.330
G29     167.5          37.5                6.1 +/-    1.24       9.3 +/-    1.24  0.040 / 0.050