PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-01:13:10
G02     47.9           42.0               13.4 +/-    1.48      18.8 +/-    1.48  0.040 / 0.050
G05     89.7           68.7               13.9 +/-    1.01      14.8 +/-    1.01  0.050 / 0.050
G12     190.4          51.1               17.3 +/-    0.85      21.6 +/-    0.85  0.030 / 0.050
G25     263.6          58.5               14.8 +/-    1.87      17.0 +/-    1.87  0.030 / 0.040
G29     321.0          44.4               14.4 +/-    0.85      19.6 +/-    0.85  0.030 / 0.030