PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-18:28:10
G02     345.6          77.6               11.3 +/-    0.30      11.5 +/-    0.30  0.030 / 0.040
G05     167.4          33.6               14.7 +/-    0.88      24.0 +/-    0.88  0.030 / 0.040
G06     42.8           37.2                8.9 +/-    0.68      13.5 +/-    0.68  0.090 / 0.130
G12     303.1          75.0               10.4 +/-    0.80      10.8 +/-    0.80  0.090 / 0.110
G19     79.7           23.4               11.2 +/-    0.55      22.7 +/-    0.55  0.090 / 0.160
G24     227.2          20.8               14.9 +/-    2.15      32.1 +/-    2.15  0.090 / 0.170
G25     315.9          36.4               12.0 +/-    1.59      18.5 +/-    1.59  0.050 / 0.100
G29     289.9          12.9               13.7 +/-    1.56      35.8 +/-    1.56  0.050 / 0.110