PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-16:58:00
G02     56.4           35.6                7.9 +/-    2.00      12.4 +/-    2.00  0.150 / 0.340
G05     63.8           65.0                7.7 +/-    0.77       8.4 +/-    0.77  0.140 / 0.310
G12     184.0          35.0                9.9 +/-    1.30      15.7 +/-    1.30  0.210 / 0.430
G13     128.5          13.3                9.7 +/-    3.94      25.1 +/-    3.94  0.200 / 0.350
G15     165.4          10.5               -3.9 +/-   22.64     -10.9 +/-   22.64  0.120 / 0.300
G21     269.5          15.0                6.2 +/-    3.09      15.3 +/-    3.09  0.110 / 0.330
G25     241.9          53.7                8.2 +/-    3.77       9.9 +/-    3.77  0.060 / 0.050
G29     326.7          51.7                8.0 +/-    0.64       9.9 +/-    0.64  0.070 / 0.070