PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/06-04:27:20
G02     46.2           43.7                4.0 +/-    1.30       5.4 +/-    1.30  0.030 / 0.030
G05     99.4           68.7                6.3 +/-    0.88       6.7 +/-    0.88  0.040 / 0.050
G12     190.5          53.1                6.1 +/-    0.72       7.5 +/-    0.72  0.260 / 0.360
G20     208.6          19.6                6.3 +/-    1.75      14.0 +/-    1.75  0.120 / 0.250
G25     273.3          57.9                1.9 +/-    2.91       2.2 +/-    2.91  0.030 / 0.030
G29     316.6          38.5                3.9 +/-    1.55       5.8 +/-    1.55  0.030 / 0.020