PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-21:27:40
G10     247.5          23.1               24.4 +/-    3.59      49.8 +/-    3.59  0.130 / 0.380
G13     58.6           33.4               15.1 +/-    0.63      24.7 +/-    0.63  0.180 / 0.420
G15     95.1           57.8               19.2 +/-    0.57      22.2 +/-    0.57  0.110 / 0.310
G16     302.6          13.9               14.6 +/-    2.44      37.2 +/-    2.44  0.120 / 0.360
G18     263.7          53.6               21.7 +/-    0.50      26.2 +/-    0.50  0.090 / 0.170
G20     40.4           51.4               15.9 +/-    0.69      19.7 +/-    0.69  0.100 / 0.200
G21     330.4          58.6               18.7 +/-    0.62      21.5 +/-    0.62  0.050 / 0.060
G26     275.0          16.5               19.1 +/-    1.63      45.7 +/-    1.63  0.040 / 0.050
G29     161.9          50.1               22.0 +/-    1.72      27.7 +/-    1.72  0.030 / 0.050