PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-21:57:40
G10     252.5          27.4               15.2 +/-    1.80      28.2 +/-    1.80  0.040 / 0.050
G13     52.7           30.2               14.1 +/-    1.05      24.5 +/-    1.05  0.030 / 0.050
G15     82.8           57.2               15.6 +/-    0.71      18.2 +/-    0.71  0.140 / 0.270
G16     296.5          14.0               12.5 +/-    1.30      31.9 +/-    1.30  0.160 / 0.300
G18     272.6          57.3               14.4 +/-    0.82      16.8 +/-    0.82  0.090 / 0.310
G20     44.7           46.1               12.6 +/-    0.63      16.7 +/-    0.63  0.080 / 0.350
G21     338.1          62.7               14.4 +/-    0.44      16.0 +/-    0.44  0.060 / 0.080
G26     269.0          14.4               13.9 +/-    1.19      35.1 +/-    1.19  0.060 / 0.070
G29     163.8          43.5               16.9 +/-    1.14      23.3 +/-    1.14  0.080 / 0.150