PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-14:28:10
G02     209.8          50.0               12.5 +/-    1.35      15.7 +/-    1.35  0.050 / 0.060
G06     105.4          80.1               10.8 +/-    0.95      11.0 +/-    0.95  0.070 / 0.060
G12     315.4          27.7                7.5 +/-    2.05      13.8 +/-    2.05  0.060 / 0.130
G17     51.9           36.0                6.9 +/-    0.41      10.7 +/-    0.41  0.050 / 0.100
G19     31.2           53.6                9.2 +/-    0.73      11.1 +/-    0.73  0.040 / 0.030
G24     280.1          41.9                8.0 +/-    1.08      11.3 +/-    1.08  0.040 / 0.030
G28     116.7          19.6               10.1 +/-    1.53      22.4 +/-    1.53  0.050 / 0.070