PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-12:42:30
G08     311.5          17.2                3.3 +/-    1.59       7.8 +/-    1.59  0.050 / 0.060
G10     331.8          59.9                3.1 +/-    0.30       3.6 +/-    0.30  0.050 / 0.060
G14     218.6          29.4                4.1 +/-    2.20       7.3 +/-    2.20  0.190 / 0.190
G20     84.5           10.2                4.0 +/-   14.59      11.2 +/-   14.59  0.120 / 0.170
G21     134.6          54.7                5.4 +/-    0.56       6.4 +/-    0.56  0.030 / 0.050
G24     74.2           30.3                3.9 +/-    0.72       6.9 +/-    0.72  0.030 / 0.030
G27     273.2          37.5                4.2 +/-    2.23       6.4 +/-    2.23  0.680 / 0.650
G32     223.8          53.5                4.8 +/-    2.12       5.8 +/-    2.12  0.640 / 0.740