PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/27-18:12:30
G02     353.5          76.1               14.0 +/-    0.45      14.3 +/-    0.45  0.130 / 0.210
G05     166.9          35.4               16.9 +/-    1.18      26.6 +/-    1.18  0.130 / 0.290
G06     43.4           35.6               12.1 +/-    1.50      19.0 +/-    1.50  0.030 / 0.030
G12     297.1          76.5               11.7 +/-    0.31      12.0 +/-    0.31  0.030 / 0.030
G19     81.4           22.2               12.6 +/-    0.78      26.2 +/-    0.78  0.060 / 0.090
G24     225.7          19.4               14.1 +/-    1.79      31.5 +/-    1.79  0.060 / 0.100
G25     315.2          38.0               14.3 +/-    1.11      21.5 +/-    1.11  0.080 / 0.240
G29     291.5          14.3               13.1 +/-    1.45      33.2 +/-    1.45  0.090 / 0.240