PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-17:27:40
G10     248.9          27.2               10.9 +/-    0.78      20.2 +/-    0.78  0.040 / 0.060
G13     54.7           29.7                7.6 +/-    1.00      13.4 +/-    1.00  0.030 / 0.050
G15     88.2           57.3                9.8 +/-    0.84      11.4 +/-    0.84  0.150 / 0.770
G16     296.9          16.0                8.0 +/-    2.29      19.5 +/-    2.29  0.150 / 0.840
G20     269.1          51.2                9.6 +/-    0.55      11.9 +/-    0.55  0.030 / 0.040
G21     331.6          58.3                8.1 +/-    0.72       9.3 +/-    0.72  0.030 / 0.050
G26     270.0          16.2               10.5 +/-    2.91      25.4 +/-    2.91  0.070 / 0.120
G29     163.2          53.3               11.7 +/-    1.14      14.2 +/-    1.14  0.080 / 0.130