PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-19:43:00
G10     255.4          32.1               14.6 +/-    1.61      24.5 +/-    1.61  0.050 / 0.070
G13     48.5           25.5                9.9 +/-    0.71      19.1 +/-    0.71  0.050 / 0.050
G15     76.4           56.2               10.5 +/-    0.68      12.4 +/-    0.68  0.080 / 0.220
G16     290.0          15.4                7.9 +/-    2.88      19.4 +/-    2.88  0.070 / 0.170
G20     279.0          55.0               13.1 +/-    0.78      15.6 +/-    0.78  0.190 / 0.700
G21     340.3          63.2               10.3 +/-    0.48      11.4 +/-    0.48  0.170 / 0.570
G26     263.2          13.3               12.0 +/-    2.05      31.0 +/-    2.05  0.030 / 0.040
G29     165.1          44.7               14.7 +/-    1.06      19.9 +/-    1.06  0.040 / 0.040