PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-16:57:30
G02     273.3          80.1               17.7 +/-    0.38      18.0 +/-    0.38  0.090 / 0.140
G05     172.5          20.6               19.9 +/-    1.66      43.1 +/-    1.66  0.100 / 0.130
G06     40.0           50.3               16.4 +/-    0.67      20.6 +/-    0.67  0.020 / 0.050
G12     320.0          61.1               16.5 +/-    0.75      18.6 +/-    0.75  0.030 / 0.050
G17     79.8           14.8               14.4 +/-    0.93      36.0 +/-    0.93  0.110 / 0.210
G19     67.5           31.5               16.9 +/-    0.55      28.7 +/-    0.55  0.100 / 0.200
G24     238.4          29.9               15.8 +/-    3.02      27.7 +/-    3.02  0.070 / 0.180
G25     317.7          23.4               14.4 +/-    1.11      29.1 +/-    1.11  0.050 / 0.180