EXAMPLE UNFILTERED AC-9 DATA FILE showing the Hydrolight Standard Format for ac-9 data. (These data were obtained in conjunction with files AC9_filtered.txt and Hydroscat6.txt.) The absorption (a) and beam attenuation (c) values of this file are used by Hydrolight to model the total (particles + CDOM) a and c (pure water values were subtracted out when processing the raw data). If the option of having a filtered ac-9 file is selected in the front end, Hydrolight subtracts the filtered a values from these a values to get particle a. The original data were binned in 0.5 m depth bins starting with the first recorded depth; the depths shown are the average depth of the data in each bin. Column headers (depth in m; and and c in 1/m): depth a412 a440 a488 a510 a532 a555 a650 a676 a715 a412 c440 c488 c510 c532 c555 c650 c676 c715 Record 11 gives the number of wavelengths and the wavelengths: 9 412.0 440.0 488.0 510.0 532.0 555.0 650.0 676.0 715.0 1.617 5.240E-01 4.553E-01 3.047E-01 2.607E-01 1.987E-01 1.466E-01 9.669E-02 2.073E-01 0.000E+00 1.109E+00 1.015E+00 9.164E-01 8.928E-01 8.702E-01 8.480E-01 8.022E-01 8.110E-01 7.750E-01 2.119 5.463E-01 4.810E-01 3.211E-01 2.774E-01 2.105E-01 1.538E-01 1.019E-01 2.202E-01 0.000E+00 1.099E+00 1.005E+00 9.102E-01 8.957E-01 8.688E-01 8.443E-01 7.958E-01 8.049E-01 7.719E-01 2.625 5.402E-01 4.708E-01 3.176E-01 2.673E-01 2.058E-01 1.541E-01 9.759E-02 2.149E-01 0.000E+00 1.103E+00 1.009E+00 9.124E-01 8.767E-01 8.553E-01 8.455E-01 7.956E-01 7.992E-01 7.712E-01 3.121 7.031E-01 6.509E-01 4.385E-01 3.701E-01 2.953E-01 2.120E-01 1.363E-01 3.403E-01 0.000E+00 1.425E+00 1.326E+00 1.226E+00 1.195E+00 1.176E+00 1.151E+00 1.093E+00 1.124E+00 1.070E+00 3.617 6.749E-01 6.243E-01 4.052E-01 3.440E-01 2.722E-01 1.952E-01 1.306E-01 3.190E-01 0.000E+00 1.478E+00 1.386E+00 1.270E+00 1.233E+00 1.195E+00 1.173E+00 1.102E+00 1.137E+00 1.079E+00 4.121 7.811E-01 7.564E-01 4.924E-01 4.240E-01 3.342E-01 2.335E-01 1.555E-01 4.186E-01 0.000E+00 1.596E+00 1.497E+00 1.369E+00 1.336E+00 1.301E+00 1.280E+00 1.197E+00 1.231E+00 1.167E+00 4.621 7.477E-01 7.146E-01 4.665E-01 3.926E-01 3.111E-01 2.214E-01 1.557E-01 3.845E-01 0.000E+00 1.480E+00 1.378E+00 1.260E+00 1.222E+00 1.200E+00 1.178E+00 1.089E+00 1.121E+00 1.047E+00 5.127 8.085E-01 7.846E-01 5.110E-01 4.399E-01 3.549E-01 2.585E-01 1.814E-01 4.366E-01 0.000E+00 1.594E+00 1.486E+00 1.364E+00 1.322E+00 1.289E+00 1.262E+00 1.175E+00 1.218E+00 1.141E+00 5.620 7.597E-01 7.249E-01 4.745E-01 4.099E-01 3.292E-01 2.403E-01 1.664E-01 3.996E-01 0.000E+00 1.638E+00 1.516E+00 1.394E+00 1.375E+00 1.356E+00 1.330E+00 1.233E+00 1.261E+00 1.180E+00 6.117 7.064E-01 6.600E-01 4.278E-01 3.735E-01 3.065E-01 2.222E-01 1.511E-01 3.588E-01 0.000E+00 1.441E+00 1.330E+00 1.212E+00 1.185E+00 1.158E+00 1.125E+00 1.025E+00 1.042E+00 9.816E-01 6.617 7.187E-01 6.818E-01 4.484E-01 3.992E-01 3.268E-01 2.383E-01 1.585E-01 3.636E-01 0.000E+00 1.473E+00 1.357E+00 1.236E+00 1.197E+00 1.171E+00 1.146E+00 1.048E+00 1.077E+00 1.014E+00 7.121 6.638E-01 6.015E-01 3.876E-01 3.409E-01 2.758E-01 1.976E-01 1.379E-01 3.114E-01 0.000E+00 1.409E+00 1.303E+00 1.175E+00 1.137E+00 1.103E+00 1.077E+00 9.717E-01 1.007E+00 9.480E-01 7.630 6.593E-01 5.982E-01 3.909E-01 3.393E-01 2.766E-01 2.003E-01 1.316E-01 3.106E-01 0.000E+00 1.379E+00 1.276E+00 1.148E+00 1.120E+00 1.092E+00 1.069E+00 9.633E-01 9.936E-01 9.276E-01 8.127 6.750E-01 6.082E-01 3.989E-01 3.560E-01 2.865E-01 2.071E-01 1.328E-01 3.037E-01 0.000E+00 1.436E+00 1.328E+00 1.201E+00 1.158E+00 1.132E+00 1.110E+00 1.008E+00 1.046E+00 9.745E-01 8.624 6.352E-01 5.826E-01 3.787E-01 3.339E-01 2.711E-01 1.951E-01 1.306E-01 3.042E-01 0.000E+00 1.424E+00 1.314E+00 1.197E+00 1.169E+00 1.138E+00 1.105E+00 1.008E+00 1.035E+00 9.603E-01 9.118 6.250E-01 5.684E-01 3.657E-01 3.208E-01 2.596E-01 1.881E-01 1.246E-01 2.858E-01 0.000E+00 1.349E+00 1.240E+00 1.118E+00 1.084E+00 1.053E+00 1.032E+00 9.258E-01 9.524E-01 8.890E-01 9.619 6.418E-01 5.828E-01 3.763E-01 3.332E-01 2.753E-01 1.961E-01 1.270E-01 3.022E-01 0.000E+00 1.344E+00 1.227E+00 1.117E+00 1.073E+00 1.047E+00 1.022E+00 9.271E-01 9.588E-01 8.959E-01 10.123 6.355E-01 5.830E-01 3.711E-01 3.175E-01 2.654E-01 1.970E-01 1.281E-01 3.016E-01 0.000E+00 1.358E+00 1.239E+00 1.129E+00 1.113E+00 1.077E+00 1.042E+00 9.378E-01 9.665E-01 8.960E-01 10.633 6.421E-01 5.940E-01 3.900E-01 3.454E-01 2.814E-01 2.027E-01 1.287E-01 3.006E-01 0.000E+00 1.386E+00 1.266E+00 1.144E+00 1.112E+00 1.083E+00 1.059E+00 9.532E-01 9.817E-01 9.189E-01 11.117 5.726E-01 5.090E-01 3.210E-01 2.734E-01 2.159E-01 1.596E-01 1.075E-01 2.391E-01 0.000E+00 1.281E+00 1.173E+00 1.053E+00 1.039E+00 1.007E+00 9.852E-01 8.719E-01 8.948E-01 8.354E-01 11.619 4.578E-01 3.789E-01 2.342E-01 1.990E-01 1.619E-01 1.166E-01 7.114E-02 1.500E-01 0.000E+00 1.064E+00 9.525E-01 8.340E-01 8.104E-01 7.779E-01 7.521E-01 6.634E-01 6.750E-01 6.234E-01 12.124 4.794E-01 4.091E-01 2.529E-01 2.127E-01 1.661E-01 1.228E-01 7.601E-02 1.675E-01 0.000E+00 1.049E+00 9.311E-01 8.139E-01 7.877E-01 7.702E-01 7.453E-01 6.520E-01 6.561E-01 5.983E-01 12.625 4.867E-01 4.005E-01 2.442E-01 2.118E-01 1.701E-01 1.248E-01 7.468E-02 1.614E-01 0.000E+00 1.168E+00 1.048E+00 9.248E-01 8.826E-01 8.479E-01 8.260E-01 7.302E-01 7.389E-01 6.831E-01 13.135 4.507E-01 3.602E-01 2.163E-01 1.844E-01 1.485E-01 1.109E-01 6.511E-02 1.364E-01 0.000E+00 1.062E+00 9.375E-01 8.129E-01 7.851E-01 7.572E-01 7.318E-01 6.450E-01 6.484E-01 5.950E-01 13.622 4.876E-01 3.998E-01 2.516E-01 2.239E-01 1.817E-01 1.317E-01 7.998E-02 1.665E-01 0.000E+00 1.045E+00 9.206E-01 8.040E-01 7.723E-01 7.462E-01 7.251E-01 6.367E-01 6.468E-01 5.963E-01 14.127 5.605E-01 4.723E-01 3.038E-01 2.669E-01 2.045E-01 1.528E-01 9.963E-02 2.088E-01 0.000E+00 1.211E+00 1.078E+00 9.596E-01 9.360E-01 9.156E-01 8.855E-01 7.906E-01 7.920E-01 7.449E-01 14.618 5.194E-01 4.146E-01 2.600E-01 2.241E-01 1.819E-01 1.323E-01 7.828E-02 1.703E-01 0.000E+00 1.352E+00 1.222E+00 1.084E+00 1.047E+00 1.012E+00 9.871E-01 8.942E-01 9.037E-01 8.465E-01 15.138 4.519E-01 3.515E-01 2.128E-01 1.797E-01 1.491E-01 1.129E-01 6.431E-02 1.252E-01 0.000E+00 1.011E+00 8.745E-01 7.548E-01 7.306E-01 6.964E-01 6.713E-01 5.916E-01 5.928E-01 5.399E-01 15.618 4.440E-01 3.412E-01 2.075E-01 1.793E-01 1.420E-01 1.072E-01 6.253E-02 1.171E-01 0.000E+00 9.476E-01 8.155E-01 6.941E-01 6.678E-01 6.395E-01 6.115E-01 5.380E-01 5.373E-01 4.909E-01 16.121 5.162E-01 4.206E-01 2.665E-01 2.342E-01 1.877E-01 1.391E-01 7.680E-02 1.568E-01 0.000E+00 1.098E+00 9.676E-01 8.496E-01 8.014E-01 7.760E-01 7.538E-01 6.672E-01 6.688E-01 6.174E-01 16.626 5.041E-01 4.004E-01 2.528E-01 2.171E-01 1.729E-01 1.258E-01 8.028E-02 1.621E-01 0.000E+00 1.159E+00 1.033E+00 9.011E-01 8.688E-01 8.362E-01 8.200E-01 7.193E-01 7.248E-01 6.669E-01 17.120 4.977E-01 3.987E-01 2.509E-01 2.148E-01 1.755E-01 1.340E-01 7.865E-02 1.560E-01 0.000E+00 1.083E+00 9.546E-01 8.261E-01 7.956E-01 7.656E-01 7.357E-01 6.579E-01 6.619E-01 6.104E-01 17.618 5.264E-01 4.287E-01 2.754E-01 2.419E-01 1.951E-01 1.478E-01 8.542E-02 1.735E-01 0.000E+00 1.299E+00 1.164E+00 1.039E+00 9.903E-01 9.590E-01 9.297E-01 8.449E-01 8.491E-01 8.037E-01 18.127 4.617E-01 3.568E-01 2.210E-01 1.893E-01 1.503E-01 1.177E-01 7.063E-02 1.304E-01 0.000E+00 1.109E+00 9.744E-01 8.433E-01 8.169E-01 7.967E-01 7.714E-01 6.930E-01 6.856E-01 6.372E-01 18.617 4.304E-01 3.199E-01 1.925E-01 1.621E-01 1.289E-01 1.018E-01 6.305E-02 1.122E-01 0.000E+00 9.362E-01 8.026E-01 6.739E-01 6.436E-01 6.155E-01 5.905E-01 5.161E-01 5.140E-01 4.738E-01 19.133 4.049E-01 2.841E-01 1.616E-01 1.355E-01 1.081E-01 8.457E-02 5.088E-02 7.487E-02 0.000E+00 7.605E-01 6.309E-01 5.091E-01 4.903E-01 4.611E-01 4.379E-01 3.740E-01 3.725E-01 3.254E-01 19.625 3.733E-01 2.599E-01 1.465E-01 1.194E-01 9.623E-02 7.618E-02 4.427E-02 6.323E-02 0.000E+00 6.750E-01 5.378E-01 4.179E-01 3.869E-01 3.635E-01 3.481E-01 2.943E-01 2.890E-01 2.464E-01 20.128 3.945E-01 2.834E-01 1.636E-01 1.384E-01 1.103E-01 8.801E-02 4.962E-02 7.766E-02 0.000E+00 6.605E-01 5.348E-01 4.238E-01 4.001E-01 3.777E-01 3.525E-01 3.070E-01 3.030E-01 2.591E-01 20.628 3.766E-01 2.763E-01 1.570E-01 1.277E-01 1.043E-01 8.146E-02 4.773E-02 7.348E-02 0.000E+00 6.576E-01 5.353E-01 4.218E-01 3.950E-01 3.730E-01 3.527E-01 3.059E-01 3.028E-01 2.588E-01 21.121 4.588E-01 3.437E-01 2.080E-01 1.809E-01 1.483E-01 1.171E-01 7.307E-02 1.244E-01 0.000E+00 8.827E-01 7.567E-01 6.345E-01 5.946E-01 5.649E-01 5.430E-01 4.813E-01 4.790E-01 4.266E-01 21.625 4.581E-01 3.467E-01 2.146E-01 1.848E-01 1.520E-01 1.191E-01 7.538E-02 1.234E-01 0.000E+00 9.681E-01 8.310E-01 6.978E-01 6.607E-01 6.331E-01 6.079E-01 5.367E-01 5.319E-01 4.879E-01 22.125 4.654E-01 3.484E-01 2.113E-01 1.825E-01 1.511E-01 1.205E-01 7.718E-02 1.331E-01 0.000E+00 9.725E-01 8.386E-01 7.040E-01 6.655E-01 6.324E-01 6.115E-01 5.407E-01 5.321E-01 4.842E-01 22.643 4.609E-01 3.535E-01 2.172E-01 1.822E-01 1.501E-01 1.203E-01 7.479E-02 1.227E-01 0.000E+00 9.856E-01 8.481E-01 7.163E-01 6.833E-01 6.510E-01 6.263E-01 5.575E-01 5.453E-01 5.002E-01 23.132 4.760E-01 3.613E-01 2.190E-01 1.970E-01 1.651E-01 1.298E-01 8.129E-02 1.292E-01 0.000E+00 1.076E+00 9.385E-01 8.054E-01 7.648E-01 7.332E-01 7.104E-01 6.206E-01 6.185E-01 5.705E-01 23.619 4.604E-01 3.476E-01 2.160E-01 1.845E-01 1.492E-01 1.204E-01 7.831E-02 1.255E-01 0.000E+00 1.078E+00 9.448E-01 8.133E-01 7.678E-01 7.345E-01 7.107E-01 6.264E-01 6.279E-01 5.780E-01 24.122 4.628E-01 3.507E-01 2.148E-01 1.852E-01 1.509E-01 1.191E-01 7.668E-02 1.249E-01 0.000E+00 1.102E+00 9.665E-01 8.323E-01 7.936E-01 7.594E-01 7.386E-01 6.456E-01 6.329E-01 5.841E-01 24.629 4.782E-01 3.667E-01 2.323E-01 2.010E-01 1.644E-01 1.303E-01 8.252E-02 1.392E-01 0.000E+00 1.205E+00 1.066E+00 9.198E-01 8.700E-01 8.369E-01 8.243E-01 7.259E-01 7.099E-01 6.627E-01 25.123 4.758E-01 3.609E-01 2.207E-01 1.856E-01 1.510E-01 1.178E-01 7.407E-02 1.308E-01 0.000E+00 1.280E+00 1.112E+00 9.745E-01 9.706E-01 9.507E-01 9.112E-01 7.985E-01 7.458E-01 6.874E-01 -1.000 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00