PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-04:12:30
G10     288.1          49.2                6.6 +/-    1.01       8.3 +/-    1.01  0.070 / 0.120
G15     47.6           33.4                4.0 +/-    0.55       6.5 +/-    0.55  0.100 / 0.100
G20     334.9          65.0                5.1 +/-    0.83       5.6 +/-    0.83  0.040 / 0.040
G21     68.5           76.6               -6.8 +/-    0.62      -7.0 +/-    0.62  0.040 / 0.040
G24     105.0          23.4                5.1 +/-    1.50      10.4 +/-    1.50  0.050 / 0.040
G27     308.6          29.8                5.3 +/-    2.73       9.4 +/-    2.73  0.050 / 0.050
G29     166.9          12.3                5.5 +/-    4.25      14.5 +/-    4.25  0.040 / 0.070
G32     208.3          22.0                8.4 +/-    1.50      17.7 +/-    1.50  0.040 / 0.090