PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/29-00:28:10
G02     233.4          73.9                9.9 +/-    0.41      10.3 +/-    0.41  0.030 / 0.050
G05     172.1          14.0               17.6 +/-    2.09      45.0 +/-    2.09  0.030 / 0.050
G06     41.9           61.7                8.1 +/-    0.50       9.1 +/-    0.50  0.160 / 0.210
G12     321.4          48.3                9.7 +/-    0.44      12.4 +/-    0.44  0.170 / 0.160
G17     66.0           27.9                7.7 +/-    2.19      14.1 +/-    2.19  0.080 / 0.130
G19     52.6           41.8                8.2 +/-    0.91      11.6 +/-    0.91  0.080 / 0.110
G24     249.2          36.7               12.2 +/-    0.65      18.8 +/-    0.65  0.030 / 0.030