PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-20:57:40
G02     13.4           68.5                9.1 +/-    0.50       9.8 +/-    0.50  0.040 / 0.040
G05     158.4          48.8               10.9 +/-    0.77      14.0 +/-    0.77  0.050 / 0.040
G06     48.2           24.8                7.9 +/-    2.45      15.4 +/-    2.45  0.060 / 0.070
G12     225.5          78.3                8.1 +/-    0.63       8.3 +/-    0.63  0.120 / 0.110
G19     91.4           15.3                9.3 +/-    2.15      23.1 +/-    2.15  0.250 / 0.260
G20     196.9          16.0               18.2 +/-    4.07      44.2 +/-    4.07  0.250 / 0.370
G24     217.5          11.5               14.3 +/-    2.30      38.7 +/-    2.30  0.030 / 0.030
G25     307.7          48.9                9.9 +/-    1.13      12.6 +/-    1.13  0.050 / 0.040
G29     299.5          20.7                9.4 +/-    1.47      20.2 +/-    1.47  0.050 / 0.050