PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-22:12:00
G02     45.8           44.6                9.5 +/-    0.72      12.9 +/-    0.72  0.040 / 0.060
G05     96.4           69.3               10.4 +/-    0.62      11.1 +/-    0.62  0.040 / 0.050
G12     185.9          48.2               12.7 +/-    0.76      16.3 +/-    0.76  0.030 / 0.030
G25     267.1          58.5               11.9 +/-    1.95      13.7 +/-    1.95  0.030 / 0.030
G29     317.2          39.0                9.0 +/-    1.12      13.3 +/-    1.12  0.040 / 0.050