PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-03:57:40
G08     307.6          19.5                9.5 +/-    0.71      21.0 +/-    0.71  0.060 / 0.060
G10     343.2          61.5                6.5 +/-    0.46       7.3 +/-    0.46  0.070 / 0.060
G14     219.9          34.6               12.7 +/-    1.26      20.3 +/-    1.26  0.060 / 0.030
G20     45.0           58.7                8.7 +/-    0.52      10.0 +/-    0.52  0.060 / 0.050
G21     138.3          53.3               10.1 +/-    1.08      12.3 +/-    1.08  0.030 / 0.010
G24     69.3           29.5                6.6 +/-    0.68      11.6 +/-    0.68  0.040 / 0.020
G27     270.6          36.8               10.8 +/-    1.37      16.5 +/-    1.37  0.080 / 0.160
G32     226.5          54.0               10.2 +/-    0.55      12.3 +/-    0.55  0.060 / 0.150