| Data Input |
| DistFit-formatted files |
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| Free-format ASCII files |
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| Data types |
| Classified |
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| Frequency |
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| Cumulative less than |
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| Cumulative greater than |
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| Moment data (size data) |
| Geometric diameter |
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| Aerodynamic diameter |
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| Weighting data (measured data) |
| Number |
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| Length |
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| Surface area |
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| Volume |
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| Mass |
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| Data manipulation |
| Superimposed, added, averaged, or subtracted data sets |
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| Automatically fit unlimited number of data sets (MultiFit) |
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| Merging of mulitple data intervals (i.e., data smoothing) |
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| Merging of muliple, component data sets (e.g., SMPS and APS) |
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| Multimodal curve fitting |
| Fit selected range of distribution |
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| Include/exclude individual data points |
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| Include/exclude zero data points |
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| Curve Fitting | |
|  Full Automatic Fit |
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| Constrained Automatic Fit |
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| Manual, Constrained Fit |
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| Number of modes in fit: 1-6 |
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| Freeze individual fitting parameters |
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| Data report |
| Measures of central tendency
(total, standard deviation, and mean, median, and mode size) |
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| Fitted function parameters and fitting criterion |
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| Size classifications | |
| Supermicron/submicron fractions |
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| Interval-by-interval comparison of discrete and analytical data |
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| Fit report |
| Summary of fit parameters |
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| Summary of fitted parameters for each mode |
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| Fitting criterion |
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| Output |
| Screen, hardcopy, data file |
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| Display options | |
| Color/B&W (mono) |
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| Data set, fit boundaries, and legend included/excluded |
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| Axes min/max values can be set by user |
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| Fitted functions superimposed, added, or included/excluded |
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| Axes labels generated automatically and can be edited |
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