PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/01-20:27:50
G02     44.4           46.0                7.4 +/-    0.69       9.9 +/-    0.69  0.030 / 0.040
G05     100.6          69.6                9.8 +/-    0.67      10.4 +/-    0.67  0.030 / 0.040
G12     184.9          48.2               12.7 +/-    1.85      16.4 +/-    1.85  0.030 / 0.050
G25     267.9          58.7                9.2 +/-    1.01      10.5 +/-    1.01  0.040 / 0.050
G29     316.6          38.2                8.7 +/-    1.10      13.0 +/-    1.10  0.050 / 0.050