PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-16:58:10
G02     67.4           26.8                8.3 +/-    0.65      15.6 +/-    0.65  0.040 / 0.040
G05     48.5           53.6                7.4 +/-    0.66       9.0 +/-    0.66  0.040 / 0.040
G12     181.3          21.3               10.7 +/-    2.46      22.7 +/-    2.46  0.090 / 0.240
G13     117.6          21.9               12.9 +/-    0.70      27.2 +/-    0.70  0.130 / 0.220
G15     158.0          21.2               12.3 +/-    2.49      26.2 +/-    2.49  0.110 / 0.180
G21     280.2          23.0                9.2 +/-    1.69      18.9 +/-    1.69  0.080 / 0.260
G25     224.6          44.0               10.0 +/-    1.19      13.7 +/-    1.19  0.130 / 0.150
G29     335.8          64.4                8.1 +/-    0.57       8.9 +/-    0.57  0.060 / 0.120