PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-08:12:50
G08     311.9          16.9                4.3 +/-    1.62      10.2 +/-    1.62  0.120 / 0.180
G10     332.4          60.0                2.9 +/-    0.55       3.2 +/-    0.55  0.130 / 0.260
G14     218.7          27.2                4.0 +/-    2.37       7.5 +/-    2.37  0.060 / 0.090
G20     70.5           37.4                4.5 +/-    0.47       6.9 +/-    0.47  0.060 / 0.070
G21     134.7          56.8                6.3 +/-    0.62       7.4 +/-    0.62  0.050 / 0.090
G24     73.4           30.0                5.5 +/-    0.58       9.7 +/-    0.58  0.050 / 0.110
G27     273.6          37.4                6.9 +/-    0.92      10.6 +/-    0.92  0.030 / 0.030
G32     223.8          54.5                7.5 +/-    1.29       9.0 +/-    1.29  0.030 / 0.040