PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-22:58:10
G05     47.0           24.0                9.0 +/-    1.02      18.0 +/-    1.02  0.180 / 0.310
G13     82.7           37.4               10.4 +/-    0.53      15.8 +/-    0.53  0.150 / 0.350
G15     132.5          49.0               10.3 +/-    1.35      13.1 +/-    1.35  0.110 / 0.240
G18     241.6          38.1               12.2 +/-    1.84      18.4 +/-    1.84  0.130 / 0.280
G20     25.9           69.2               10.1 +/-    0.61      10.7 +/-    0.61  0.070 / 0.120
G25     197.7          11.3               12.5 +/-    2.19      33.9 +/-    2.19  0.070 / 0.130
G26     293.7          19.8               11.5 +/-    2.04      25.3 +/-    2.04  0.030 / 0.030
G29     150.9          74.1               11.8 +/-    0.98      12.2 +/-    0.98  0.030 / 0.040