PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/21-22:43:00
G10     294.7          51.7                8.9 +/-    2.33      11.1 +/-    2.33  0.040 / 0.040
G15     46.7           31.0                6.5 +/-    1.36      11.2 +/-    1.36  0.040 / 0.040
G20     346.5          65.3                8.4 +/-    0.66       9.2 +/-    0.66  0.070 / 0.090
G21     83.1           76.1                8.7 +/-    0.43       9.0 +/-    0.43  0.060 / 0.090
G24     102.0          25.5                9.3 +/-    1.40      18.0 +/-    1.40  0.120 / 0.120
G27     304.1          32.8                6.1 +/-    2.82      10.1 +/-    2.82  0.070 / 0.130
G29     167.8          10.3               12.1 +/-    3.70      33.6 +/-    3.70  0.110 / 0.060
G32     209.1          28.9               14.1 +/-    2.32      25.3 +/-    2.32  0.100 / 0.050