PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/09-14:27:40
G02     246.6          77.3                8.7 +/-    0.49       8.9 +/-    0.49  0.030 / 0.040
G05     173.5          15.8               11.7 +/-    0.82      28.4 +/-    0.82  0.050 / 0.060
G06     40.1           58.4                8.2 +/-    0.57       9.4 +/-    0.57  0.030 / 0.040
G12     321.4          53.2                9.6 +/-    1.38      11.6 +/-    1.38  0.030 / 0.040
G17     74.1           19.1                7.5 +/-    0.93      16.8 +/-    0.93  0.170 / 0.340
G19     60.8           35.8                7.0 +/-    0.62      11.0 +/-    0.62  0.150 / 0.250
G24     245.1          34.0                9.4 +/-    1.33      15.2 +/-    1.33  0.060 / 0.110
G25     317.2          16.1                6.5 +/-    4.21      15.7 +/-    4.21  0.060 / 0.120