PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-21:57:40
G10     278.0          44.2               10.7 +/-    2.02      14.6 +/-    2.02  0.070 / 0.130
G13     38.4           10.5                8.6 +/-    2.03      23.7 +/-    2.03  0.180 / 0.150
G15     53.8           46.4               10.3 +/-    0.96      13.6 +/-    0.96  0.110 / 0.200
G20     317.5          63.8               10.5 +/-    0.73      11.6 +/-    0.73  0.110 / 0.210
G21     33.4           76.5               10.9 +/-    0.61      11.1 +/-    0.61  0.040 / 0.030
G24     109.7          19.8               12.5 +/-    1.01      27.6 +/-    1.01  0.030 / 0.040
G27     313.8          25.2                9.4 +/-    1.44      18.2 +/-    1.44  0.110 / 0.400
G29     168.7          22.0               11.9 +/-    1.45      25.0 +/-    1.45  0.110 / 0.710
G32     205.7          19.1               13.9 +/-    4.35      31.3 +/-    4.35  0.030 / 0.040