PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-22:12:30
G02     214.5          58.9               14.7 +/-    0.59      16.8 +/-    0.59  0.100 / 0.110
G06     68.4           78.1               13.2 +/-    0.92      13.5 +/-    0.92  0.080 / 0.100
G12     316.8          31.7               11.0 +/-    1.18      18.6 +/-    1.18  0.060 / 0.080
G17     55.6           33.3               11.9 +/-    1.70      19.5 +/-    1.70  0.070 / 0.060
G19     37.3           50.0               12.7 +/-    1.21      16.1 +/-    1.21  0.130 / 0.260
G24     266.7          42.0               13.1 +/-    2.86      18.4 +/-    2.86  0.140 / 0.280
G28     119.9          19.2               15.8 +/-    2.02      35.4 +/-    2.02  0.030 / 0.020