PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-21:57:50
G10     278.0          44.2               11.3 +/-    0.69      15.4 +/-    0.69  0.050 / 0.040
G13     38.4           10.5               10.1 +/-    1.90      28.0 +/-    1.90  0.050 / 0.040
G15     53.8           46.4               10.1 +/-    0.35      13.3 +/-    0.35  0.090 / 0.160
G20     317.5          63.8               11.1 +/-    0.45      12.2 +/-    0.45  0.080 / 0.120
G21     33.4           76.5               11.9 +/-    0.27      12.2 +/-    0.27  0.100 / 0.210
G24     109.7          19.8               13.8 +/-    1.15      30.6 +/-    1.15  0.100 / 0.200
G27     313.8          25.2                9.4 +/-    0.89      18.2 +/-    0.89  0.160 / 0.620
G29     168.7          22.0               12.8 +/-    2.20      26.9 +/-    2.20  0.160 / 0.620
G32     205.7          19.1               14.6 +/-    2.31      32.9 +/-    2.31  0.030 / 0.040