PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-15:28:00
G01     309.0          31.7                8.2 +/-    2.29      13.8 +/-    2.29  0.070 / 0.160
G10     103.7          42.0                8.5 +/-    0.98      12.0 +/-    0.98  0.090 / 0.170
G11     287.5          26.8                8.5 +/-    1.10      16.0 +/-    1.10  0.040 / 0.040
G14     347.0          68.2                7.0 +/-    0.63       7.5 +/-    0.63  0.040 / 0.040
G22     309.3          25.7                7.2 +/-    1.31      13.9 +/-    1.31  0.080 / 0.140
G25     85.1           16.1                8.5 +/-    1.99      20.5 +/-    1.99  0.080 / 0.160
G31     167.1          63.3                9.8 +/-    0.45      10.8 +/-    0.45  0.020 / 0.020
G32     34.7           53.4                8.1 +/-    1.17       9.8 +/-    1.17  0.020 / 0.030