PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/03-17:58:00
G02     37.4           51.9                9.2 +/-    0.78      11.3 +/-    0.78  0.020 / 0.030
G05     123.6          67.7                9.7 +/-    0.69      10.4 +/-    0.69  0.020 / 0.030
G12     184.9          54.6                9.1 +/-    1.36      10.9 +/-    1.36  0.030 / 0.050
G25     281.2          58.2               12.8 +/-    1.19      14.8 +/-    1.19  0.030 / 0.040
G29     312.1          32.7                7.1 +/-    0.76      11.8 +/-    0.76  0.030 / 0.040