PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-01:28:00
G10     252.5          29.6               10.9 +/-    2.06      19.3 +/-    2.06  0.080 / 0.110
G13     51.2           27.6                5.5 +/-    2.13      10.2 +/-    2.13  0.080 / 0.130
G15     80.4           56.4                9.8 +/-    0.41      11.5 +/-    0.41  0.050 / 0.040
G16     295.1          15.1                5.1 +/-    2.59      12.6 +/-    2.59  0.060 / 0.050
G20     273.0          52.0               10.6 +/-    2.52      13.0 +/-    2.52  0.090 / 0.380
G21     336.9          61.4                8.7 +/-    0.68       9.8 +/-    0.68  0.110 / 0.370
G26     267.0          14.6                7.9 +/-    1.03      19.8 +/-    1.03  0.140 / 0.180
G29     163.3          46.1               10.2 +/-    1.23      13.5 +/-    1.23  0.110 / 0.150