PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/02-20:12:40
G02     40.2           49.6                8.6 +/-    0.57      10.9 +/-    0.57  0.040 / 0.030
G05     116.2          68.5                8.9 +/-    0.75       9.5 +/-    0.75  0.040 / 0.030
G12     186.1          53.7                9.1 +/-    1.71      11.0 +/-    1.71  0.050 / 0.050
G25     278.3          58.3                9.0 +/-    1.00      10.4 +/-    1.00  0.050 / 0.050
G29     313.4          34.3                6.7 +/-    2.21      10.8 +/-    2.21  0.060 / 0.070