PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-01:27:50
G02     55.6           35.8               10.5 +/-    1.80      16.4 +/-    1.80  0.040 / 0.070
G05     65.8           64.1               11.1 +/-    0.56      12.2 +/-    0.56  0.050 / 0.070
G12     185.2          37.7               13.3 +/-    0.68      20.0 +/-    0.68  0.180 / 0.290
G13     132.4          11.6               15.4 +/-    2.06      41.4 +/-    2.06  0.200 / 0.310
G21     266.9          13.5               14.1 +/-    2.57      36.3 +/-    2.57  0.040 / 0.030
G25     246.6          55.2               13.3 +/-    0.99      15.8 +/-    0.99  0.030 / 0.030
G29     324.2          48.7               12.4 +/-    0.56      15.9 +/-    0.56  0.190 / 0.410