PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-03:12:50
G05     47.4           20.1                6.9 +/-    1.80      15.1 +/-    1.80  0.130 / 0.570
G13     82.9           36.5               10.5 +/-    1.32      16.2 +/-    1.32  0.120 / 0.400
G15     132.2          48.5               13.3 +/-    1.31      17.0 +/-    1.31  0.040 / 0.070
G16     317.8          10.9                1.1 +/-   15.19       2.9 +/-   15.19  0.040 / 0.090
G20     247.4          46.5               13.4 +/-    0.41      17.7 +/-    0.41  0.070 / 0.180
G21     307.8          43.1                9.8 +/-    1.10      13.6 +/-    1.10  0.060 / 0.140
G25     202.6          15.3               14.0 +/-    2.19      34.7 +/-    2.19  0.160 / 0.230
G26     291.5          21.1               10.5 +/-    1.62      22.6 +/-    1.62  0.180 / 0.340
G29     150.2          79.3               11.2 +/-    0.72      11.4 +/-    0.72  0.070 / 0.130