PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-00:12:50
G05     46.3           24.0                8.1 +/-    2.22      16.2 +/-    2.22  0.180 / 0.120
G13     87.4           35.8               10.3 +/-    1.37      16.1 +/-    1.37  0.090 / 0.120
G15     138.7          45.2               11.8 +/-    0.88      15.8 +/-    0.88  0.070 / 0.090
G20     238.8          20.4                9.5 +/-    1.82      20.7 +/-    1.82  0.070 / 0.090
G21     304.3          40.6                9.9 +/-    1.30      14.3 +/-    1.30  0.080 / 0.100
G25     203.9          18.0               11.2 +/-    4.20      26.0 +/-    4.20  0.080 / 0.110
G26     295.2          20.9               10.0 +/-    1.00      21.6 +/-    1.00  0.440 / 0.710
G29     140.7          83.8                9.2 +/-    0.76       9.2 +/-    0.76  0.220 / 0.390