PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-16:28:00
G02     200.8          20.5               12.3 +/-    2.22      26.7 +/-    2.22  0.050 / 0.080
G06     169.5          55.0               12.2 +/-    1.19      14.6 +/-    1.19  0.060 / 0.080
G13     225.2          12.7                9.2 +/-   14.47      24.2 +/-   14.47  0.130 / 0.250
G17     19.1           61.1               10.6 +/-    0.66      11.9 +/-    0.66  0.170 / 0.250
G19     330.2          71.1               10.4 +/-    0.77      10.9 +/-    0.77  0.110 / 0.100
G24     309.3          29.9               10.5 +/-    1.05      18.4 +/-    1.05  0.130 / 0.120
G28     84.7           44.0               11.2 +/-    1.14      15.3 +/-    1.14  0.030 / 0.040
G30     156.8          12.3               11.8 +/-    2.19      31.4 +/-    2.19  0.040 / 0.040