PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-16:27:30
G02     56.2           35.6                8.6 +/-    1.75      13.6 +/-    1.75  0.140 / 0.570
G05     65.3           65.7                8.6 +/-    0.40       9.4 +/-    0.40  0.120 / 0.380
G12     183.9          35.4               10.2 +/-    1.03      16.0 +/-    1.03  0.230 / 0.390
G13     129.0          12.9               12.0 +/-    4.38      31.3 +/-    4.38  0.260 / 0.400
G15     165.4          10.2               -9.1 +/-   12.27     -25.2 +/-   12.27  0.130 / 0.310
G21     269.0          14.6                7.4 +/-    2.74      18.5 +/-    2.74  0.060 / 0.100
G25     242.9          54.1               10.4 +/-    2.54      12.6 +/-    2.54  0.080 / 0.080
G29     326.2          51.0                7.6 +/-    0.94       9.5 +/-    0.94  0.030 / 0.030