PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-19:57:40
G02     348.1          77.2                8.5 +/-    0.40       8.7 +/-    0.40  0.040 / 0.060
G05     162.8          36.8               10.9 +/-    0.78      16.7 +/-    0.78  0.040 / 0.060
G06     42.9           35.6                8.3 +/-    1.51      13.0 +/-    1.51  0.200 / 0.300
G12     300.4          77.7                7.4 +/-    1.16       7.6 +/-    1.16  0.300 / 0.320
G17     88.7           9.6                12.6 +/-    3.00      35.4 +/-    3.00  0.080 / 0.110
G19     76.4           27.8               10.0 +/-    1.49      18.3 +/-    1.49  0.080 / 0.130
G24     224.8          20.1               11.7 +/-    3.65      25.7 +/-    3.65  0.050 / 0.070
G25     316.6          32.1                8.1 +/-    1.66      13.7 +/-    1.66  0.060 / 0.090