PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-00:57:30
G05     51.9           9.6                 7.2 +/-    2.03      20.3 +/-    2.03  0.130 / 0.240
G10     241.6          19.9               10.8 +/-    2.68      23.8 +/-    2.68  0.110 / 0.210
G13     64.7           33.8                8.8 +/-    0.81      14.2 +/-    0.81  0.030 / 0.060
G15     107.9          56.4               10.8 +/-    0.80      12.7 +/-    0.80  0.060 / 0.070
G16     308.0          14.0                6.8 +/-    2.55      17.2 +/-    2.55  0.070 / 0.310
G20     256.4          43.0               10.8 +/-    1.86      15.0 +/-    1.86  0.080 / 0.420
G21     321.6          52.2                9.0 +/-    0.88      11.0 +/-    0.88  0.080 / 0.110
G26     280.1          18.8                7.5 +/-    1.16      17.1 +/-    1.16  0.090 / 0.110
G29     157.9          61.3               10.8 +/-    0.58      12.1 +/-    0.58  0.030 / 0.040