PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-23:28:10
G08     315.5          15.7               11.9 +/-    3.40      29.2 +/-    3.40  0.060 / 0.120
G10     314.0          56.2               12.4 +/-    0.73      14.6 +/-    0.73  0.070 / 0.100
G14     213.8          23.9               20.9 +/-    1.36      41.8 +/-    1.36  0.040 / 0.080
G15     45.6           18.9               11.2 +/-    1.08      25.3 +/-    1.08  0.060 / 0.070
G18     21.9           63.1               12.1 +/-    0.73      13.4 +/-    0.73  0.040 / 0.050
G20     79.7           10.5               12.9 +/-    2.76      35.7 +/-    2.76  0.030 / 0.050
G21     122.9          64.1               15.5 +/-    0.39      17.0 +/-    0.39  0.060 / 0.100
G24     86.3           29.9               16.2 +/-    0.99      28.4 +/-    0.99  0.060 / 0.090
G27     284.9          38.0               14.6 +/-    1.47      22.0 +/-    1.47  0.130 / 0.320
G32     217.1          40.6               16.8 +/-    0.84      24.3 +/-    0.84  0.110 / 0.270