PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-18:28:00
G02     234.9          71.9                9.5 +/-    0.68      10.0 +/-    0.68  0.110 / 0.290
G05     172.7          14.2               10.7 +/-    1.76      27.1 +/-    1.76  0.110 / 0.230
G06     41.5           58.6                9.5 +/-    0.62      11.0 +/-    0.62  0.040 / 0.050
G12     322.6          53.6                9.5 +/-    1.15      11.4 +/-    1.15  0.040 / 0.060
G17     69.4           23.3                9.0 +/-    0.78      18.4 +/-    0.78  0.130 / 0.430
G19     52.3           42.5                9.2 +/-    0.60      12.8 +/-    0.60  0.150 / 0.400
G24     245.9          35.9               13.1 +/-    1.00      20.4 +/-    1.00  0.030 / 0.050
G25     316.2          10.9               -6.5 +/-   38.40     -17.7 +/-   38.40  0.040 / 0.040