PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-14:27:30
G02     255.4          77.3                7.8 +/-    0.50       8.0 +/-    0.50  0.180 / 0.400
G05     171.3          19.0                8.2 +/-    1.46      18.5 +/-    1.46  0.120 / 0.460
G06     39.8           52.5                6.6 +/-    0.36       8.1 +/-    0.36  0.110 / 0.120
G12     321.1          57.3                6.6 +/-    1.83       7.7 +/-    1.83  0.090 / 0.120
G17     73.2           21.3                7.1 +/-    0.81      15.2 +/-    0.81  0.120 / 0.190
G19     62.6           33.9                7.7 +/-    1.06      12.4 +/-    1.06  0.080 / 0.180
G24     241.7          31.9                9.3 +/-    1.21      15.6 +/-    1.21  0.050 / 0.050
G25     316.9          15.3                4.3 +/-    3.29      10.7 +/-    3.29  0.030 / 0.050