PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-16:28:10
G02     37.5           51.7                8.7 +/-    0.50      10.7 +/-    0.50  0.030 / 0.040
G05     128.8          67.9                8.9 +/-    0.50       9.5 +/-    0.50  0.040 / 0.050
G12     187.9          56.1                9.5 +/-    0.68      11.1 +/-    0.68  0.030 / 0.040
G25     277.6          59.1                5.9 +/-    1.17       6.8 +/-    1.17  0.030 / 0.040
G29     313.0          34.0                5.5 +/-    1.00       8.9 +/-    1.00  0.030 / 0.030