PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/12-14:28:00
G02     273.2          80.8                5.3 +/-    0.49       5.3 +/-    0.49  0.030 / 0.030
G05     171.4          20.8               10.0 +/-    1.62      21.4 +/-    1.62  0.030 / 0.040
G06     39.6           53.0                4.7 +/-    0.46       5.8 +/-    0.46  0.060 / 0.160
G12     320.3          58.9                5.0 +/-    1.24       5.8 +/-    1.24  0.050 / 0.170
G17     78.6           15.8                7.7 +/-    2.57      18.8 +/-    2.57  0.090 / 0.280
G19     66.1           32.4                7.0 +/-    0.75      11.7 +/-    0.75  0.080 / 0.260
G24     239.5          30.6                8.0 +/-    0.73      13.8 +/-    0.73  0.030 / 0.040
G25     317.7          20.9                3.1 +/-    2.86       6.6 +/-    2.86  0.030 / 0.050