PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/28-15:12:20
G02     37.5           51.1                9.2 +/-    1.46      11.4 +/-    1.46  0.030 / 0.040
G05     132.7          66.4               11.8 +/-    0.53      12.7 +/-    0.53  0.040 / 0.040
G06     57.2           10.1                7.5 +/-    2.00      20.9 +/-    2.00  0.170 / 0.390
G12     190.2          60.3               10.5 +/-    0.45      11.9 +/-    0.45  0.120 / 0.280
G25     287.5          56.1                7.0 +/-    1.76       8.2 +/-    1.76  0.030 / 0.030
G29     311.1          32.0                7.9 +/-    1.11      13.2 +/-    1.11  0.030 / 0.030