PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/03-20:42:50
G02     326.1          80.1                9.7 +/-    0.60       9.9 +/-    0.60  0.030 / 0.030
G05     165.0          31.5               13.7 +/-    1.64      23.2 +/-    1.64  0.030 / 0.030
G06     41.4           40.9                8.5 +/-    1.14      12.2 +/-    1.14  0.120 / 0.080
G12     313.8          71.7               10.4 +/-    0.62      10.9 +/-    0.62  0.050 / 0.080
G17     84.0           13.4               10.2 +/-    2.55      26.5 +/-    2.55  0.300 / 0.240
G19     71.4           30.8                9.7 +/-    1.45      16.7 +/-    1.45  0.180 / 0.200
G24     229.2          24.0               13.5 +/-    2.95      26.9 +/-    2.95  0.100 / 0.250
G25     317.5          26.8               11.7 +/-    1.14      21.9 +/-    1.14  0.170 / 0.210