PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-20:27:50
G02     36.6           52.6                9.2 +/-    0.37      11.3 +/-    0.37  0.030 / 0.040
G05     127.4          66.3               10.4 +/-    0.75      11.2 +/-    0.75  0.040 / 0.040
G06     57.5           10.1                8.6 +/-    2.94      23.9 +/-    2.94  0.050 / 0.040
G12     188.0          58.8               10.2 +/-    2.02      11.7 +/-    2.02  0.040 / 0.060
G25     286.9          56.9               10.0 +/-    0.77      11.7 +/-    0.77  0.040 / 0.060
G29     310.6          31.0                9.2 +/-    1.19      15.8 +/-    1.19  0.050 / 0.080