PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-07:12:40
G08     292.3          23.0                4.7 +/-    1.51       9.5 +/-    1.51  0.120 / 0.150
G10     13.4           62.8                3.5 +/-    1.03       3.9 +/-    1.03  0.140 / 0.100
G14     230.7          48.3                4.7 +/-    2.53       6.0 +/-    2.53  0.050 / 0.080
G18     317.8          12.4                0.4 +/-    2.27       1.1 +/-    2.27  0.050 / 0.090
G20     67.6           51.3                4.9 +/-    1.35       6.1 +/-    1.35  0.030 / 0.030
G21     147.2          38.1                5.5 +/-    0.64       8.3 +/-    0.64  0.030 / 0.030
G24     54.3           24.4                3.8 +/-    2.38       7.5 +/-    2.38  0.030 / 0.030
G27     254.3          31.3                5.2 +/-    2.86       8.9 +/-    2.86  0.030 / 0.030
G32     245.0          65.0                4.8 +/-    0.59       5.2 +/-    0.59  0.080 / 0.130