PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-14:12:50
G02     201.9          22.8                9.2 +/-    2.24      18.9 +/-    2.24  0.310 / 0.690
G06     166.4          59.6                7.7 +/-    0.34       8.8 +/-    0.34  0.230 / 0.440
G17     22.3           58.9                6.9 +/-    0.90       7.9 +/-    0.90  0.040 / 0.050
G19     342.9          69.6                6.5 +/-    0.87       6.9 +/-    0.87  0.030 / 0.040
G24     306.8          32.0                6.6 +/-    1.91      11.0 +/-    1.91  0.080 / 0.170
G28     88.7           42.4                6.7 +/-    1.06       9.4 +/-    1.06  0.090 / 0.170
G30     157.6          10.4                8.3 +/-   13.53      23.1 +/-   13.53  0.040 / 0.040