PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-22:12:30
G02     219.7          64.5               12.6 +/-    1.09      13.8 +/-    1.09  0.090 / 0.250
G06     51.7           73.2               13.1 +/-    0.77      13.6 +/-    0.77  0.100 / 0.250
G12     318.6          36.8               10.0 +/-    0.92      15.3 +/-    0.92  0.030 / 0.040
G17     60.1           29.9               10.4 +/-    0.68      18.3 +/-    0.68  0.040 / 0.030
G19     43.8           46.2               10.6 +/-    1.14      14.1 +/-    1.14  0.040 / 0.060
G24     259.3          40.5               12.8 +/-    0.85      18.5 +/-    0.85  0.040 / 0.060
G28     123.7          15.1               14.0 +/-    1.24      34.7 +/-    1.24  0.050 / 0.080