PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-01:42:50
G02     212.5          58.1               10.4 +/-    1.10      12.0 +/-    1.10  0.040 / 0.090
G06     71.8           77.9                8.1 +/-    0.41       8.2 +/-    0.41  0.060 / 0.120
G12     317.1          32.0                7.8 +/-    1.08      13.2 +/-    1.08  0.040 / 0.080
G17     51.9           37.9                5.0 +/-    0.46       7.6 +/-    0.46  0.040 / 0.080
G19     34.4           52.0                7.0 +/-    0.58       8.6 +/-    0.58  0.090 / 0.290
G24     271.1          42.1                7.8 +/-    0.73      11.0 +/-    0.73  0.110 / 0.290
G28     120.3          16.0                7.0 +/-    1.45      17.1 +/-    1.45  0.070 / 0.080