PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-01:57:50
G02     37.1           52.0                7.9 +/-    0.98       9.7 +/-    0.98  0.030 / 0.030
G05     128.9          65.0                9.7 +/-    0.34      10.6 +/-    0.34  0.040 / 0.030
G06     55.8           13.0                4.5 +/-    0.65      11.6 +/-    0.65  0.030 / 0.030
G12     195.3          64.1                9.6 +/-    0.30      10.5 +/-    0.30  0.040 / 0.040
G25     292.8          54.7               10.4 +/-    1.66      12.5 +/-    1.66  0.050 / 0.060
G29     309.3          29.8                8.4 +/-    1.07      14.9 +/-    1.07  0.040 / 0.050