PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-22:42:50
G02     237.8          74.9               11.4 +/-    0.33      11.7 +/-    0.33  0.040 / 0.040
G05     171.5          15.5               16.4 +/-    1.79      40.2 +/-    1.79  0.040 / 0.040
G06     41.2           59.0               11.7 +/-    0.45      13.4 +/-    0.45  0.070 / 0.100
G12     321.8          51.4               11.2 +/-    0.63      13.9 +/-    0.63  0.090 / 0.090
G17     68.4           25.5               11.7 +/-    2.03      22.6 +/-    2.03  0.120 / 0.170
G19     54.2           41.0               10.7 +/-    1.63      15.3 +/-    1.63  0.180 / 0.270
G24     246.5          35.6               14.1 +/-    2.66      22.1 +/-    2.66  0.120 / 0.230
G25     316.3          10.4              -16.7 +/-   15.57     -46.2 +/-   15.57  0.040 / 0.030