PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-04:12:30
G10     247.7          24.1               10.8 +/-    1.64      21.6 +/-    1.64  0.110 / 0.270
G13     57.0           31.9                7.1 +/-    1.68      12.0 +/-    1.68  0.120 / 0.280
G15     94.0           57.9                8.5 +/-    0.41       9.8 +/-    0.41  0.040 / 0.040
G16     298.3          15.7                8.0 +/-    1.65      19.5 +/-    1.65  0.040 / 0.050
G20     281.0          62.9                8.2 +/-    0.69       9.1 +/-    0.69  0.080 / 0.130
G21     328.9          57.4                7.7 +/-    0.46       9.0 +/-    0.46  0.050 / 0.130
G26     269.7          17.0               11.0 +/-    1.05      26.1 +/-    1.05  0.030 / 0.030
G29     164.2          54.6                9.1 +/-    0.48      10.9 +/-    0.48  0.030 / 0.030