PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-05:27:30
G10     265.2          37.0               10.6 +/-    1.12      16.3 +/-    1.12  0.180 / 0.440
G13     42.8           19.8                5.7 +/-    3.40      12.5 +/-    3.40  0.180 / 0.380
G15     61.0           50.0                7.2 +/-    0.67       9.1 +/-    0.67  0.200 / 0.120
G16     279.8          12.6                9.2 +/-    1.40      24.3 +/-    1.40  0.140 / 0.150
G20     343.2          68.7                6.3 +/-    0.41       6.7 +/-    0.41  0.040 / 0.040
G21     357.8          70.6                7.1 +/-    0.67       7.5 +/-    0.67  0.040 / 0.040
G24     121.5          13.2                7.3 +/-    1.52      19.0 +/-    1.52  0.180 / 0.270
G27     319.2          17.9                8.9 +/-    2.32      20.7 +/-    2.32  0.200 / 0.240
G29     168.1          33.4                7.3 +/-    1.53      11.9 +/-    1.53  0.240 / 0.310