PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/21-18:43:10
G05     51.1           12.7                8.0 +/-    2.79      21.1 +/-    2.79  0.050 / 0.070
G10     241.1          19.8               10.7 +/-    2.95      23.7 +/-    2.95  0.050 / 0.090
G13     65.3           33.8                9.8 +/-    1.21      15.9 +/-    1.21  0.080 / 0.120
G15     111.1          56.4               11.0 +/-    0.69      12.9 +/-    0.69  0.070 / 0.150
G16     306.8          14.9                6.2 +/-    1.87      15.5 +/-    1.87  0.030 / 0.040
G20     256.5          43.8               10.5 +/-    2.53      14.4 +/-    2.53  0.030 / 0.030
G21     320.4          51.2                9.7 +/-    0.53      12.0 +/-    0.53  0.110 / 0.190
G26     279.7          19.1                8.1 +/-    0.69      18.3 +/-    0.69  0.090 / 0.210
G29     158.7          64.5               10.7 +/-    0.72      11.7 +/-    0.72  0.160 / 0.180