PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-17:13:10
G02     40.4           49.5                7.2 +/-    0.29       9.2 +/-    0.29  0.030 / 0.040
G05     116.7          69.8                7.5 +/-    0.72       7.9 +/-    0.72  0.030 / 0.040
G12     186.1          51.5                7.5 +/-    1.73       9.2 +/-    1.73  0.050 / 0.060
G25     270.2          59.4                9.1 +/-    0.69      10.4 +/-    0.69  0.040 / 0.060
G29     315.3          36.7                6.7 +/-    1.11      10.3 +/-    1.11  0.040 / 0.050