PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-19:57:40
G10     266.0          36.9               15.4 +/-    1.27      23.6 +/-    1.27  0.150 / 0.250
G13     42.9           20.3               10.8 +/-    1.41      23.7 +/-    1.41  0.160 / 0.300
G15     59.6           48.8               13.1 +/-    0.56      16.8 +/-    0.56  0.040 / 0.050
G16     284.6          11.3               13.2 +/-    3.07      35.8 +/-    3.07  0.040 / 0.050
G18     300.6          64.6               13.1 +/-    0.36      14.4 +/-    0.36  0.140 / 0.360
G20     53.8           35.8               11.1 +/-    0.58      17.4 +/-    0.58  0.150 / 0.320
G21     8.8            72.5               15.0 +/-    0.55      15.6 +/-    0.55  0.060 / 0.140
G24     122.1          13.5               16.9 +/-    1.90      43.7 +/-    1.90  0.050 / 0.120
G27     318.2          19.7               12.8 +/-    1.85      28.3 +/-    1.85  0.160 / 0.600
G29     165.5          26.7               15.7 +/-    1.26      29.6 +/-    1.26  0.150 / 0.540