PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-16:42:40
G02     28.7           58.4                8.4 +/-    0.42       9.7 +/-    0.42  0.050 / 0.050
G05     144.7          61.4                9.5 +/-    0.66      10.7 +/-    0.66  0.030 / 0.040
G06     54.2           14.6                6.8 +/-    1.53      17.1 +/-    1.53  0.040 / 0.040
G12     192.0          65.3                8.7 +/-    0.75       9.5 +/-    0.75  0.040 / 0.040
G19     98.7           13.3                8.3 +/-    1.34      21.4 +/-    1.34  0.040 / 0.060
G25     293.9          55.5                8.2 +/-    0.97       9.7 +/-    0.97  0.050 / 0.050
G29     307.2          27.5                6.4 +/-    1.25      11.7 +/-    1.25  0.150 / 0.260