PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-20:42:50
G10     247.5          23.1               19.9 +/-    1.95      40.6 +/-    1.95  0.080 / 0.120
G13     58.5           33.3               13.1 +/-    1.25      21.4 +/-    1.25  0.080 / 0.080
G15     94.4           57.7               16.5 +/-    0.84      19.1 +/-    0.84  0.120 / 0.200
G16     303.1          13.7               13.7 +/-    2.08      35.1 +/-    2.08  0.100 / 0.280
G18     263.9          53.8               15.9 +/-    2.41      19.2 +/-    2.41  0.030 / 0.040
G20     40.1           51.7               20.3 +/-    0.70      25.1 +/-    0.70  0.030 / 0.040
G21     331.0          58.8               14.8 +/-    0.67      17.0 +/-    0.67  0.060 / 0.050
G26     275.5          16.5               20.8 +/-    2.42      49.9 +/-    2.42  0.070 / 0.050
G29     161.6          49.5               23.9 +/-    0.63      30.3 +/-    0.63  0.030 / 0.040