PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-09:12:30
G02     260.2          80.6                4.8 +/-    0.43       4.9 +/-    0.43  0.110 / 0.140
G05     170.4          19.5                4.6 +/-    1.29      10.3 +/-    1.29  0.110 / 0.170
G06     38.8           60.2                4.0 +/-    0.56       4.6 +/-    0.56  0.110 / 0.110
G12     321.0          54.2                3.9 +/-    0.50       4.6 +/-    0.50  0.110 / 0.130
G17     74.7           19.5                4.4 +/-    1.07       9.8 +/-    1.07  0.030 / 0.040
G19     62.1           35.3                4.8 +/-    0.69       7.6 +/-    0.69  0.040 / 0.040
G24     242.7          32.8                4.8 +/-    2.53       8.0 +/-    2.53  0.040 / 0.030
G25     317.4          15.7                2.5 +/-    2.32       6.0 +/-    2.32  0.030 / 0.030