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Registered Psychtoolbox-3 installations as of March 14 2016 15:50:13.

    Total number of downloads + updates     : 196322

    Total number of unique installations    : 70534
    Number of PTB's updated at least once   : 19627

    Breakdown of installations by Psychtoolbox flavor:

    'beta'/'current'              : 64926
    'unsupported' aka 'stable'    : 683
    'trunk'                       : 37
    Psychtoolbox-3.0.7            : 0
    Psychtoolbox-3.0.8-PreTiger   : 5
    Psychtoolbox-3.0.8            : 27
    Psychtoolbox-3.0.9            : 18
    Psychtoolbox-3.0.10           : 94
    Psychtoolbox-3.0.11-PreWinGst : 1
    Psychtoolbox-3.0.11           : 1557
    Unclassified                  : 3179

    Estimated breakdown by host operating system (*):

    MacOS-X all                  :    21225 ( 30.092%)
    Windows all                  :    47170 ( 66.876%)
    Linux all                    :     2139 (  3.033%)
    Linux on ARM embedded/mobile :        3
    Linux   64 Bit Matlab/Octave :     1247 ( 58.298% of all Linux systems)
    Windows 64 Bit Matlab/Octave :    17968 ( 38.092% of all Windows systems)
    MacOS-X 64 Bit Matlab/Octave :    12434 ( 58.582% of all MacOS-X systems)

    (*) Strong underestimate for Linux, overestimate for Windows and OSX!

    For Macintosh - Breakdown by system architecture:

    PowerMac                     : 1446 (  6.813% of all Apple systems)
    IntelMac                     : 19779

    For Macintosh - Breakdown by OS/X version:

    10.3  - Panther               : 156
    10.4  - Tiger                 : 1864
    10.5  - Leopard               : 3023
    10.6  - Snow Leopard          : 4054
    10.7  - Lion                  : 2047
    10.8  - Mountain Lion         : 2350
    10.9  - Mavericks             : 3154
    10.10 - Yosemite              : 3432
    10.11 - El Capitan            : 1122

    For MS-Windows - Breakdown by Windows version:

    Windows additional preVistas : 1117
    Windows 2000                 : 145
    Windows XP                   : 14179
    Windows Vista                : 2653
    Windows 7                    : 23903
    Windows 8                    : 4431
    Windows 8.1                  : 161
    Windows 10                   : 580

    For MS-Windows - Breakdown by Matlab release:

    Matlab R2007a (V7.4) or later: 41809
    Previous Matlab releases     : 5190

    Breakdown for all systems by Matlab major versions:

    Matlab 5.x                   : 1
    Matlab 6.x                   : 524
    Matlab 7.x                   : 42267
    Matlab 7.0   (R2005a)        : 2177
    Matlab 7.1   (R2005b)        : 1324
    Matlab 7.2   (R2006a)        : 876
    Matlab 7.3   (R2006b)        : 1137
    Matlab 7.4   (R2007a)        : 3111
    Matlab 7.5   (R2007b)        : 4218
    Matlab 7.6   (R2008a)        : 2756
    Matlab 7.7   (R2008b)        : 2118
    Matlab 7.8   (R2009a)        : 3180
    Matlab 7.9   (R2009b)        : 3355
    Matlab 7.10  (R2010a)        : 5967
    Matlab 7.11  (R2010b)        : 2402
    Matlab 7.12  (R2011a)        : 2736
    Matlab 7.13  (R2011b)        : 2482
    Matlab 7.14  (R2012a)        : 4428
    Matlab 8.0   (R2012b)        : 3965
    Matlab 8.1   (R2013a)        : 5272
    Matlab 8.2   (R2013b)        : 2858
    Matlab 8.3   (R2014a)        : 4612
    Matlab 8.4   (R2014b)        : 3633
    Matlab 8.5   (R2015a)        : 3619
    Matlab 8.6   (R2015b)        : 2654
    Matlab 9.0   (R2016a)        : 64

    Number of GNU/Octave V3+ installations by system:

    Octave on OS/X               :      523 (  2.464% of all OS/X installs)
    Octave on Linux              :      371 ( 17.345% of all Linux installs)
    Octave all on Windows        :      171 (  0.363% of all Windows installs)
    Octave 4 on Windows          :        8 (  0.017% of all Windows installs)

    Parsed lines in registration log        : 198550
    Invalid (skipped) log entries           : 6