PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-21:42:40
G10     288.3          48.7               10.7 +/-    3.20      13.7 +/-    3.20  0.040 / 0.040
G15     49.0           39.1                8.5 +/-    0.97      12.5 +/-    0.97  0.040 / 0.040
G20     336.4          65.2               10.5 +/-    0.51      11.4 +/-    0.51  0.070 / 0.100
G21     70.6           76.9               11.5 +/-    0.35      11.7 +/-    0.35  0.090 / 0.100
G24     101.7          23.7               11.6 +/-    0.82      23.3 +/-    0.82  0.080 / 0.150
G27     307.7          30.2               11.3 +/-    1.20      19.7 +/-    1.20  0.080 / 0.160
G29     168.6          14.1               14.7 +/-    1.16      37.4 +/-    1.16  0.080 / 0.110
G32     207.9          26.6               14.8 +/-    1.43      27.8 +/-    1.43  0.040 / 0.060