PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-21:12:30
G02     35.3           53.6                9.4 +/-    1.12      11.3 +/-    1.12  0.030 / 0.030
G05     131.0          65.2               10.4 +/-    0.48      11.3 +/-    0.48  0.030 / 0.030
G06     56.4           11.5                8.4 +/-    2.11      22.7 +/-    2.11  0.040 / 0.040
G12     189.8          61.3               12.0 +/-    0.51      13.4 +/-    0.51  0.040 / 0.050
G19     102.2          9.7                11.4 +/-    1.23      32.0 +/-    1.23  0.120 / 0.110
G25     290.5          55.9               12.5 +/-    1.24      14.8 +/-    1.24  0.100 / 0.160
G29     309.4          29.7               10.2 +/-    1.80      18.0 +/-    1.80  0.040 / 0.040