PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-20:27:40
G10     262.7          37.0               15.0 +/-    1.72      22.9 +/-    1.72  0.050 / 0.050
G13     43.7           20.4                9.3 +/-    2.61      20.2 +/-    2.61  0.050 / 0.040
G15     65.5           52.9               11.8 +/-    0.86      14.3 +/-    0.86  0.240 / 0.220
G16     282.9          13.9               10.9 +/-    2.01      27.9 +/-    2.01  0.200 / 0.240
G20     291.0          58.7               11.7 +/-    1.28      13.5 +/-    1.28  0.040 / 0.040
G21     351.9          68.3               12.4 +/-    0.58      13.3 +/-    0.58  0.040 / 0.040
G24     125.5          11.5               15.6 +/-    3.60      42.2 +/-    3.60  0.150 / 0.540
G27     320.6          15.0                8.7 +/-    1.88      21.8 +/-    1.88  0.140 / 0.600
G29     166.6          36.5               13.7 +/-    0.95      21.1 +/-    0.95  0.100 / 0.240