PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-04:12:30
G10     252.3          28.0               13.0 +/-    1.80      23.8 +/-    1.80  0.120 / 0.540
G13     51.9           28.9                7.0 +/-    1.30      12.5 +/-    1.30  0.150 / 0.560
G15     82.8           57.2                8.5 +/-    0.43       9.9 +/-    0.43  0.040 / 0.050
G16     292.8          15.5                9.0 +/-    2.91      22.1 +/-    2.91  0.050 / 0.060
G20     290.1          64.2                8.0 +/-    0.50       8.8 +/-    0.50  0.060 / 0.160
G21     335.5          61.2                8.5 +/-    0.52       9.5 +/-    0.52  0.070 / 0.170
G26     264.5          14.8               10.6 +/-    1.10      26.6 +/-    1.10  0.020 / 0.050
G29     165.7          48.4                9.8 +/-    0.96      12.6 +/-    0.96  0.030 / 0.040