PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-22:28:00
G02     251.4          78.2               16.0 +/-    0.80      16.3 +/-    0.80  0.040 / 0.050
G05     169.9          19.3               23.2 +/-    2.37      52.0 +/-    2.37  0.040 / 0.050
G06     40.3           54.5               14.1 +/-    0.58      16.9 +/-    0.58  0.100 / 0.140
G12     321.7          56.0               13.8 +/-    1.25      16.2 +/-    1.25  0.090 / 0.120
G17     72.2           22.7               12.3 +/-    0.84      25.5 +/-    0.84  0.050 / 0.190
G19     58.6           38.4               13.2 +/-    1.03      19.6 +/-    1.03  0.080 / 0.200
G24     241.8          33.1               19.0 +/-    1.17      31.3 +/-    1.17  0.130 / 0.310
G25     317.1          14.2               14.1 +/-    1.25      35.7 +/-    1.25  0.130 / 0.390