PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-04:42:40
G08     287.3          22.4                8.3 +/-    0.99      17.3 +/-    0.99  0.090 / 0.050
G10     27.4           62.2                4.0 +/-    0.73       4.4 +/-    0.73  0.120 / 0.110
G14     237.0          53.1               10.3 +/-    1.77      12.5 +/-    1.77  0.030 / 0.010
G18     317.6          17.4                6.6 +/-    2.24      15.4 +/-    2.24  0.030 / 0.010
G20     75.6           48.0                6.8 +/-    1.23       8.7 +/-    1.23  0.060 / 0.130
G21     150.3          33.0                8.8 +/-    2.00      14.5 +/-    2.00  0.070 / 0.110
G24     49.8           21.6                5.2 +/-    3.99      11.0 +/-    3.99  0.060 / 0.080
G27     247.5          27.9               11.3 +/-    1.69      20.8 +/-    1.69  0.080 / 0.080
G31     181.5          13.8                8.6 +/-    3.83      21.9 +/-    3.83  0.110 / 0.060
G32     260.8          71.3                6.0 +/-    0.46       6.2 +/-    0.46  0.100 / 0.060