PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-15:57:20
G02     223.2          65.9               14.9 +/-    1.05      16.1 +/-    1.05  0.080 / 0.090
G06     46.2           68.5               14.2 +/-    0.42      15.1 +/-    0.42  0.060 / 0.100
G12     320.7          42.9               13.2 +/-    0.60      18.4 +/-    0.60  0.030 / 0.050
G17     65.3           25.5               13.1 +/-    1.86      25.3 +/-    1.86  0.030 / 0.050
G19     49.9           42.7               14.2 +/-    1.33      19.8 +/-    1.33  0.080 / 0.090
G24     258.1          39.4               14.1 +/-    2.54      20.8 +/-    2.54  0.090 / 0.120