PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-14:58:00
G02     204.1          31.0                8.7 +/-    1.63      15.0 +/-    1.63  0.110 / 0.230
G03     59.5           9.6                -6.2 +/-   33.34     -17.5 +/-   33.34  0.100 / 0.180
G06     154.0          69.9               10.3 +/-    0.69      10.8 +/-    0.69  0.110 / 0.090
G12     308.7          19.3                6.9 +/-    0.68      15.5 +/-    0.68  0.090 / 0.090
G17     37.1           48.1                8.3 +/-    1.57      10.7 +/-    1.57  0.120 / 0.160
G19     350.0          67.0                8.6 +/-    0.39       9.3 +/-    0.39  0.060 / 0.160
G24     296.9          39.1                8.4 +/-    6.17      12.3 +/-    6.17  0.030 / 0.030
G28     101.6          31.8                8.0 +/-    1.22      13.5 +/-    1.22  0.030 / 0.030