PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-19:57:40
G02     235.4          72.8               11.2 +/-    0.66      11.7 +/-    0.66  0.120 / 0.260
G05     172.4          14.5               13.6 +/-    1.80      34.3 +/-    1.80  0.170 / 0.300
G06     41.5           58.9               10.3 +/-    0.53      11.8 +/-    0.53  0.050 / 0.050
G12     322.2          52.5                9.5 +/-    1.61      11.7 +/-    1.61  0.040 / 0.060
G17     68.9           24.2               10.1 +/-    0.35      20.1 +/-    0.35  0.120 / 0.490
G19     52.7           42.1                9.5 +/-    0.32      13.3 +/-    0.32  0.060 / 0.110
G24     246.3          35.9               13.1 +/-    1.07      20.4 +/-    1.07  0.060 / 0.090
G25     316.2          10.5              -15.8 +/-   28.30     -43.7 +/-   28.30  0.040 / 0.040