PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-20:28:00
G10     252.6          27.5               18.5 +/-    1.77      34.2 +/-    1.77  0.080 / 0.320
G13     52.6           30.0               17.1 +/-    1.25      30.0 +/-    1.25  0.080 / 0.330
G15     81.6           56.7               17.3 +/-    0.84      20.2 +/-    0.84  0.090 / 0.290
G16     297.5          13.7               13.6 +/-    1.77      34.9 +/-    1.77  0.100 / 0.300
G18     273.2          57.8               17.8 +/-    0.71      20.6 +/-    0.71  0.040 / 0.040
G20     44.2           46.7               16.0 +/-    0.46      21.1 +/-    0.46  0.040 / 0.040
G21     339.5          63.2               17.3 +/-    0.54      19.1 +/-    0.54  0.060 / 0.140
G26     270.0          14.3               16.8 +/-    1.99      42.6 +/-    1.99  0.070 / 0.150
G29     163.2          42.4               20.0 +/-    0.90      28.0 +/-    0.90  0.050 / 0.060