PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-16:42:50
G02     13.3           69.6               10.2 +/-    0.66      10.8 +/-    0.66  0.040 / 0.060
G05     162.4          43.7               12.1 +/-    1.10      16.6 +/-    1.10  0.050 / 0.060
G06     45.8           30.0                8.6 +/-    1.24      15.1 +/-    1.24  0.220 / 0.450
G12     262.3          79.4                8.7 +/-    1.30       8.8 +/-    1.30  0.220 / 0.340
G19     87.7           18.0               10.6 +/-    1.63      24.4 +/-    1.63  0.030 / 0.020
G20     197.6          11.1               -2.2 +/-   20.68      -6.0 +/-   20.68  0.020 / 0.020
G24     220.5          14.3               10.4 +/-    3.68      26.3 +/-    3.68  0.040 / 0.050
G25     311.9          43.5               11.0 +/-    1.36      15.1 +/-    1.36  0.030 / 0.050
G29     297.4          20.1               10.1 +/-    0.95      22.2 +/-    0.95  0.080 / 0.080