PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-15:58:10
G01     294.7          39.1                9.2 +/-    2.47      13.5 +/-    2.47  0.020 / 0.030
G03     311.5          17.7                7.0 +/-    0.64      16.3 +/-    0.64  0.020 / 0.030
G10     117.2          31.5               11.2 +/-    0.78      19.1 +/-    0.78  0.040 / 0.080
G11     271.8          26.2                8.9 +/-    1.27      16.8 +/-    1.27  0.050 / 0.090
G14     16.3           61.5                8.2 +/-    0.34       9.1 +/-    0.34  0.040 / 0.050
G22     313.5          37.5                7.8 +/-    1.14      11.8 +/-    1.14  0.040 / 0.050
G25     70.7           19.0                8.6 +/-    0.87      19.4 +/-    0.87  0.060 / 0.120
G26     157.8          11.3                1.4 +/-   40.66       3.8 +/-   40.66  0.050 / 0.120
G31     138.7          77.3               10.6 +/-    0.50      10.8 +/-    0.50  0.060 / 0.080
G32     48.9           43.4                7.8 +/-    0.51      10.8 +/-    0.51  0.050 / 0.080