PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-14:12:30
G02     201.9          22.8                7.6 +/-    1.04      15.7 +/-    1.04  0.040 / 0.090
G06     166.4          59.6                8.8 +/-    1.07      10.0 +/-    1.07  0.050 / 0.090
G13     222.5          10.2                8.2 +/-    2.24      22.7 +/-    2.24  0.080 / 0.170
G17     22.3           58.9                7.0 +/-    0.32       8.0 +/-    0.32  0.110 / 0.160
G19     342.9          69.6                7.2 +/-    0.52       7.6 +/-    0.52  0.090 / 0.110
G24     306.8          32.0                7.7 +/-    1.57      12.9 +/-    1.57  0.080 / 0.120
G28     88.7           42.4                7.4 +/-    0.63      10.4 +/-    0.63  0.050 / 0.040
G30     157.6          10.4                9.3 +/-    3.77      25.6 +/-    3.77  0.040 / 0.040