PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-04:57:50
G10     261.7          36.0               -2.0 +/-   10.56      -3.1 +/-   10.56  0.090 / 0.170
G13     44.3           21.4                3.9 +/-    1.60       8.3 +/-    1.60  0.080 / 0.160
G15     64.2           51.3                4.8 +/-    0.70       5.9 +/-    0.70  0.070 / 0.080
G16     287.3          13.3                4.0 +/-    1.80      10.3 +/-    1.80  0.060 / 0.090
G20     288.5          57.9               -4.0 +/-    9.30      -4.6 +/-    9.30  0.030 / 0.040
G21     354.9          68.9                2.6 +/-    1.31       2.8 +/-    1.31  0.040 / 0.040
G24     124.2          11.2                3.2 +/-    5.80       8.6 +/-    5.80  0.150 / 0.240
G26     259.6          10.3                0.3 +/-   10.17       0.7 +/-   10.17  0.140 / 0.340
G27     321.2          13.4                2.8 +/-    3.48       7.3 +/-    3.48  0.130 / 0.270
G29     164.8          33.6                6.0 +/-    1.67       9.8 +/-    1.67  0.140 / 0.280