PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/14-12:57:40
G02     232.8          70.1                4.9 +/-    1.76       5.2 +/-    1.76  0.110 / 0.250
G05     176.1          10.7               -5.2 +/-   20.80     -14.2 +/-   20.80  0.110 / 0.190
G06     41.7           61.1                3.8 +/-    0.45       4.2 +/-    0.45  0.130 / 0.110
G12     321.9          50.6                4.5 +/-    1.22       5.7 +/-    1.22  0.090 / 0.100
G17     69.3           22.4                3.3 +/-    1.04       6.8 +/-    1.04  0.050 / 0.070
G19     50.3           43.8                4.0 +/-    0.48       5.5 +/-    0.48  0.040 / 0.050
G24     244.7          36.3                6.0 +/-    1.98       9.4 +/-    1.98  0.030 / 0.050
G25     316.0          12.5                3.2 +/-    2.85       8.3 +/-    2.85  0.030 / 0.050