PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-18:43:00
G05     46.2           24.9                8.8 +/-    1.86      17.2 +/-    1.86  0.090 / 0.090
G13     84.3           35.1               10.7 +/-    1.04      17.0 +/-    1.04  0.070 / 0.090
G15     135.4          46.9               11.4 +/-    0.57      15.0 +/-    0.57  0.080 / 0.110
G20     242.2          32.1                9.9 +/-    1.31      16.7 +/-    1.31  0.080 / 0.130
G21     306.1          41.3                8.8 +/-    0.82      12.5 +/-    0.82  0.030 / 0.050
G25     203.9          17.9                9.8 +/-    5.39      22.8 +/-    5.39  0.040 / 0.050
G26     295.2          20.1                7.3 +/-    1.86      16.1 +/-    1.86  0.120 / 0.310
G29     139.6          81.6               10.1 +/-    0.79      10.1 +/-    0.79  0.100 / 0.270