PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-21:27:40
G02     36.5           52.6               11.4 +/-    0.56      14.0 +/-    0.56  0.040 / 0.040
G05     128.0          66.0               13.1 +/-    1.04      14.2 +/-    1.04  0.050 / 0.040
G06     57.1           10.7                8.8 +/-    1.51      24.1 +/-    1.51  0.050 / 0.050
G12     189.3          60.0               12.5 +/-    1.02      14.2 +/-    1.02  0.040 / 0.060
G25     288.4          56.4                9.2 +/-    1.66      10.8 +/-    1.66  0.040 / 0.050
G29     310.2          30.6               10.0 +/-    1.82      17.4 +/-    1.82  0.040 / 0.050