PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-23:12:40
G02     53.4           38.0               10.4 +/-    0.40      15.6 +/-    0.40  0.210 / 0.630
G05     70.5           65.9               10.0 +/-    0.53      10.8 +/-    0.53  0.250 / 0.550
G12     184.4          38.6               13.6 +/-    1.33      20.3 +/-    1.33  0.030 / 0.040
G13     133.5          10.4               -1.8 +/-   32.81      -5.1 +/-   32.81  0.030 / 0.050
G21     265.4          12.1               13.5 +/-    2.61      35.9 +/-    2.61  0.080 / 0.090
G25     249.0          56.1               11.4 +/-    0.91      13.4 +/-    0.91  0.120 / 0.100
G29     322.9          46.8               11.1 +/-    0.89      14.5 +/-    0.89  0.050 / 0.090