PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-04:43:10
G10     248.5          24.8               13.4 +/-    0.77      26.3 +/-    0.77  0.110 / 0.230
G13     56.0           31.4                7.4 +/-    1.49      12.6 +/-    1.49  0.110 / 0.270
G15     91.4           57.7                9.4 +/-    0.50      10.9 +/-    0.50  0.030 / 0.040
G16     297.4          15.7                4.3 +/-    1.35      10.6 +/-    1.35  0.030 / 0.040
G20     290.5          66.6                6.2 +/-    0.36       6.7 +/-    0.36  0.050 / 0.140
G21     330.3          58.2                6.7 +/-    1.03       7.8 +/-    1.03  0.090 / 0.190
G26     268.7          16.6                9.5 +/-    1.75      22.7 +/-    1.75  0.030 / 0.040
G29     164.5          53.3               10.4 +/-    0.28      12.6 +/-    0.28  0.030 / 0.040