PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-14:28:00
G02     248.7          75.9                8.1 +/-    0.41       8.4 +/-    0.41  0.110 / 0.250
G05     172.0          17.4                7.8 +/-    1.19      18.2 +/-    1.19  0.100 / 0.280
G06     39.9           54.4                7.5 +/-    0.94       9.0 +/-    0.94  0.060 / 0.130
G12     321.3          55.3                6.2 +/-    1.19       7.4 +/-    1.19  0.050 / 0.130
G17     71.7           22.4                5.7 +/-    1.02      11.9 +/-    1.02  0.070 / 0.100
G19     60.8           35.0                7.6 +/-    1.44      12.0 +/-    1.44  0.090 / 0.110
G24     243.6          33.0               11.0 +/-    1.30      18.1 +/-    1.30  0.040 / 0.040
G25     316.7          13.7                5.6 +/-    2.20      14.3 +/-    2.20  0.030 / 0.050