PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-16:12:50
G02     36.1           52.8                8.2 +/-    0.68      10.0 +/-    0.68  0.040 / 0.050
G05     133.4          66.7                9.7 +/-    0.66      10.5 +/-    0.66  0.030 / 0.050
G06     57.9           9.9                 7.4 +/-    1.54      20.8 +/-    1.54  0.040 / 0.030
G12     188.8          58.1               10.4 +/-    0.56      12.1 +/-    0.56  0.030 / 0.040
G25     280.8          58.8                7.4 +/-    1.31       8.5 +/-    1.31  0.030 / 0.030
G29     311.9          32.7                6.4 +/-    0.67      10.6 +/-    0.67  0.040 / 0.030