PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-14:42:30
G02     203.3          27.9                7.2 +/-    1.25      13.2 +/-    1.25  0.110 / 0.080
G06     158.7          66.8                5.8 +/-    1.00       6.2 +/-    1.00  0.100 / 0.080
G12     307.0          17.1                4.2 +/-    2.44       9.8 +/-    2.44  0.240 / 0.250
G17     34.4           50.4                6.2 +/-    1.07       7.8 +/-    1.07  0.150 / 0.210
G19     341.7          68.2                5.6 +/-    0.65       6.0 +/-    0.65  0.030 / 0.030
G24     300.2          37.6                4.9 +/-    1.27       7.3 +/-    1.27  0.030 / 0.020
G28     98.6           33.8                5.6 +/-    0.78       9.1 +/-    0.78  0.030 / 0.040