PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-02:13:10
G02     56.1           35.2               10.9 +/-    1.33      17.2 +/-    1.33  0.050 / 0.080
G05     64.8           63.6               12.3 +/-    0.47      13.5 +/-    0.47  0.040 / 0.080
G12     185.5          37.6               15.6 +/-    0.46      23.7 +/-    0.46  0.030 / 0.030
G13     132.1          11.9               14.4 +/-    1.91      38.5 +/-    1.91  0.030 / 0.040
G20     216.6          11.4                2.5 +/-   32.32       6.8 +/-   32.32  0.170 / 0.250
G21     267.2          13.9               13.5 +/-    2.18      34.5 +/-    2.18  0.180 / 0.370
G25     246.1          54.9               13.3 +/-    0.85      15.9 +/-    0.85  0.180 / 0.340
G29     324.6          49.2               13.0 +/-    0.63      16.6 +/-    0.63  0.180 / 0.330