PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-07:57:40
G08     293.3          21.9                4.2 +/-    1.50       8.9 +/-    1.50  0.080 / 0.110
G10     13.1           63.1                5.1 +/-    0.66       5.7 +/-    0.66  0.080 / 0.090
G14     231.8          44.0                9.2 +/-    0.84      12.6 +/-    0.84  0.090 / 0.100
G18     317.8          11.3               -6.2 +/-   14.09     -16.8 +/-   14.09  0.100 / 0.150
G20     84.1           32.3                5.6 +/-    0.94       9.3 +/-    0.94  0.040 / 0.040
G21     147.9          38.0                6.1 +/-    0.74       9.1 +/-    0.74  0.040 / 0.030
G24     53.5           24.2                3.1 +/-    0.59       6.2 +/-    0.59  0.080 / 0.120
G27     251.1          30.1                7.1 +/-    1.87      12.4 +/-    1.87  0.080 / 0.130
G31     182.1          10.3               -6.3 +/-   11.13     -17.4 +/-   11.13  0.050 / 0.100
G32     254.7          71.7                7.7 +/-    0.62       8.1 +/-    0.62  0.040 / 0.100