PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-15:27:50
G01     309.0          31.7                8.6 +/-    1.42      14.5 +/-    1.42  0.020 / 0.030
G10     103.7          42.0                8.8 +/-    0.77      12.4 +/-    0.77  0.030 / 0.040
G11     287.5          26.8                8.1 +/-    1.36      15.2 +/-    1.36  0.070 / 0.140
G14     347.0          68.2                7.6 +/-    0.66       8.1 +/-    0.66  0.060 / 0.140
G22     309.3          25.7                7.5 +/-    2.99      14.5 +/-    2.99  0.040 / 0.060
G25     85.1           16.1                9.0 +/-    1.25      21.8 +/-    1.25  0.040 / 0.050
G31     167.1          63.3               12.0 +/-    0.66      13.2 +/-    0.66  0.070 / 0.220
G32     34.7           53.4                8.5 +/-    0.56      10.3 +/-    0.56  0.090 / 0.250