PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-14:42:30
G02     268.8          80.4                7.3 +/-    0.64       7.4 +/-    0.64  0.140 / 0.310
G05     171.7          20.1                9.6 +/-    1.18      21.0 +/-    1.18  0.080 / 0.330
G06     39.6           53.4                6.6 +/-    0.36       8.0 +/-    0.36  0.040 / 0.050
G12     320.5          58.3                7.3 +/-    1.25       8.5 +/-    1.25  0.030 / 0.050
G17     78.1           16.1                8.3 +/-    1.08      20.0 +/-    1.08  0.070 / 0.120
G19     65.6           32.8                7.6 +/-    1.09      12.6 +/-    1.09  0.090 / 0.140
G24     240.1          31.0               10.2 +/-    1.14      17.5 +/-    1.14  0.050 / 0.190
G25     317.7          20.5                6.9 +/-    4.20      15.1 +/-    4.20  0.080 / 0.180