PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-21:57:50
G02     25.1           61.7               10.7 +/-    1.09      11.9 +/-    1.09  0.040 / 0.040
G05     148.2          56.0               13.1 +/-    0.59      15.5 +/-    0.59  0.040 / 0.050
G06     50.6           19.9                9.0 +/-    1.22      19.8 +/-    1.22  0.030 / 0.040
G12     204.4          73.9               11.4 +/-    1.47      11.8 +/-    1.47  0.020 / 0.040
G19     93.5           16.1               10.8 +/-    1.78      26.1 +/-    1.78  0.060 / 0.070
G25     305.7          48.4               10.9 +/-    1.10      14.0 +/-    1.10  0.050 / 0.080
G29     301.8          21.8               11.0 +/-    2.84      23.2 +/-    2.84  0.080 / 0.190