PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-22:28:10
G05     49.1           19.1                7.6 +/-    0.36      17.2 +/-    0.36  0.110 / 0.250
G10     238.0          13.5               16.0 +/-    2.28      41.2 +/-    2.28  0.100 / 0.270
G13     74.0           37.3               10.2 +/-    0.71      15.5 +/-    0.71  0.140 / 0.460
G15     121.9          53.6               13.4 +/-    0.44      16.2 +/-    0.44  0.160 / 0.320
G16     313.8          11.9                8.7 +/-    2.68      23.4 +/-    2.68  0.060 / 0.140
G18     248.0          43.7               15.5 +/-    1.47      21.3 +/-    1.47  0.050 / 0.170
G20     31.4           62.9               11.0 +/-    0.86      12.2 +/-    0.86  0.030 / 0.040
G21     315.8          49.3               10.0 +/-    1.07      12.8 +/-    1.07  0.030 / 0.040
G26     287.2          19.5               10.4 +/-    2.14      23.1 +/-    2.14  0.060 / 0.080
G29     156.3          65.9               11.4 +/-    0.62      12.3 +/-    0.62  0.050 / 0.070