PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-14:12:30
G02     266.5          80.3                6.5 +/-    0.46       6.6 +/-    0.46  0.050 / 0.210
G05     171.7          19.8               10.8 +/-    1.93      23.9 +/-    1.93  0.050 / 0.170
G06     39.5           54.4                6.4 +/-    0.60       7.7 +/-    0.60  0.140 / 0.360
G12     320.7          57.6                5.3 +/-    0.81       6.1 +/-    0.81  0.130 / 0.230
G17     77.6           16.6                8.2 +/-    1.40      19.6 +/-    1.40  0.080 / 0.130
G19     64.9           33.2                7.3 +/-    0.88      11.9 +/-    0.88  0.120 / 0.110
G24     240.7          31.4                8.6 +/-    0.80      14.6 +/-    0.80  0.030 / 0.040
G25     317.7          19.7                4.1 +/-    1.76       9.0 +/-    1.76  0.030 / 0.040