PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-00:57:40
G02     250.9          78.8               10.5 +/-    0.43      10.7 +/-    0.43  0.040 / 0.060
G05     169.8          19.0               17.9 +/-    2.08      40.3 +/-    2.08  0.050 / 0.060
G06     40.3           56.1               10.6 +/-    0.80      12.5 +/-    0.80  0.050 / 0.200
G12     321.5          54.0               11.4 +/-    1.80      13.8 +/-    1.80  0.050 / 0.220
G17     70.7           24.7               10.7 +/-    0.52      21.0 +/-    0.52  0.030 / 0.030
G19     58.6           38.1                9.9 +/-    0.37      14.9 +/-    0.37  0.040 / 0.030
G24     243.1          33.6               14.5 +/-    1.12      23.6 +/-    1.12  0.120 / 0.280
G25     317.0          13.3                8.4 +/-    1.55      21.7 +/-    1.55  0.080 / 0.180