PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-19:43:00
G02     241.5          73.2               10.2 +/-    0.63      10.6 +/-    0.63  0.040 / 0.030
G05     173.4          15.8               16.2 +/-    1.30      39.4 +/-    1.30  0.030 / 0.030
G06     40.6           55.8                9.1 +/-    0.67      10.8 +/-    0.67  0.150 / 0.210
G12     321.9          55.7                9.3 +/-    0.80      11.0 +/-    0.80  0.140 / 0.170
G17     74.4           18.7                9.1 +/-    3.41      20.7 +/-    3.41  0.110 / 0.100
G19     61.2           35.5                7.8 +/-    1.25      12.3 +/-    1.25  0.080 / 0.100
G24     245.0          34.1               12.5 +/-    1.60      20.1 +/-    1.60  0.040 / 0.040
G25     317.3          18.4                9.9 +/-    3.58      22.6 +/-    3.58  0.040 / 0.050