PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-19:27:40
G02     350.9          76.5                8.1 +/-    0.40       8.3 +/-    0.40  0.040 / 0.090
G05     162.4          37.9               10.9 +/-    0.67      16.4 +/-    0.67  0.040 / 0.070
G06     43.4           34.4                8.0 +/-    0.92      12.8 +/-    0.92  0.030 / 0.070
G12     294.8          79.0                6.1 +/-    0.81       6.2 +/-    0.81  0.030 / 0.080
G19     77.5           27.2                8.6 +/-    0.92      16.0 +/-    0.92  0.060 / 0.040
G24     223.7          19.2               11.5 +/-    4.06      25.8 +/-    4.06  0.040 / 0.040
G25     316.2          33.3                7.6 +/-    1.64      12.4 +/-    1.64  0.060 / 0.090
G29     288.8          10.2               -9.3 +/-   16.41     -25.8 +/-   16.41  0.080 / 0.110