PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/29-20:43:10
G07     34.3           69.7               13.9 +/-    0.87      14.7 +/-    0.87  0.130 / 0.300
G08     58.5           47.5               13.1 +/-    0.48      17.1 +/-    0.48  0.200 / 0.350
G09     179.7          42.8               18.3 +/-    1.62      25.5 +/-    1.62  0.140 / 0.440
G11     126.4          31.4               16.8 +/-    0.85      28.6 +/-    0.85  0.220 / 0.330
G18     109.3          13.8               17.5 +/-    2.42      44.8 +/-    2.42  0.050 / 0.060
G23     159.4          9.9                23.9 +/-    5.08      66.6 +/-    5.08  0.050 / 0.070
G27     38.0           11.0               11.1 +/-    1.30      30.2 +/-    1.30  0.050 / 0.090
G28     268.7          50.3               14.0 +/-    0.71      17.6 +/-    0.71  0.060 / 0.070
G30     330.2          58.2               12.6 +/-    0.64      14.6 +/-    0.64  0.060 / 0.140