PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-02:12:00
G02     45.3           44.6                9.8 +/-    0.84      13.2 +/-    0.84  0.080 / 0.060
G05     101.1          68.8               10.8 +/-    0.58      11.5 +/-    0.58  0.040 / 0.060
G12     189.4          52.9               12.2 +/-    0.98      14.9 +/-    0.98  0.030 / 0.050
G25     273.9          58.0               11.0 +/-    0.64      12.7 +/-    0.64  0.040 / 0.050
G29     315.9          37.5               10.1 +/-    1.00      15.3 +/-    1.00  0.040 / 0.060