PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-20:27:40
G07     34.8           69.7               12.8 +/-    0.94      13.6 +/-    0.94  0.210 / 0.450
G08     58.5           47.5               13.0 +/-    0.51      16.9 +/-    0.51  0.240 / 0.380
G09     179.6          42.6               17.5 +/-    1.31      24.4 +/-    1.31  0.060 / 0.150
G11     126.2          31.5               17.3 +/-    1.02      29.4 +/-    1.02  0.060 / 0.140
G18     109.2          13.9               15.6 +/-    1.51      39.8 +/-    1.51  0.060 / 0.070
G27     38.0           10.9               11.3 +/-    2.18      30.9 +/-    2.18  0.050 / 0.080
G28     268.9          50.3               13.7 +/-    0.90      17.2 +/-    0.90  0.190 / 0.430
G30     330.2          58.2               11.9 +/-    0.73      13.7 +/-    0.73  0.180 / 0.480