PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-00:57:30
G02     44.8           45.2               10.2 +/-    0.59      13.7 +/-    0.59  0.040 / 0.040
G05     102.3          68.9               12.3 +/-    0.71      13.1 +/-    0.71  0.040 / 0.050
G12     188.7          52.6               13.7 +/-    0.88      16.8 +/-    0.88  0.030 / 0.030
G25     273.9          58.1               16.8 +/-    1.31      19.5 +/-    1.31  0.030 / 0.030
G29     315.7          37.1               11.8 +/-    0.94      18.1 +/-    0.94  0.040 / 0.040