Name: Power Zone Interval
Author: torsteinvh

*** Any questions, problems and suggestions, please use the support thread ***
https://forums.garmin.com/showthread.php?334003-Datafields-Power-Zone-graphs
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This data field shows the power zone in a moving bar graph. The bar colors change dynamically during the activity depending on power zone. The field is meant to visualize the power during intervals, too make it easier see if the effort is appropriate.
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The data field change appearance depending on the chosen layout.
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This version supports user configurable power zones on watches supporting Connect IQ 1.2.1. 
How to change settings: https://apps.garmin.com/settingsHelp
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The following settings are available (Defaults are provided for watches not supporting user settings):
- Display power as % of FTP (Default: On)
- Background color of label shows current zone (Default: On)
- Duration of graph in minutes (Default: 15 min)
- Power Zone 1 (Default: 73 W)
- Power Zone 2 (Default: 160W)
- Power Zone 3 (Default: 219W)
- Power Zone 4 (Default: 262W)
- Power Zone 5 (Default: 306W)
- Functional Threshold Power (FTP) (Default: 292 W)
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Development history:
Version 1.0 - December 1, 2015:
- Completely redesigned single field layout
- Memory and performance optimizations
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Version 0.8 - November 18, 2015:
- Reduced memory footprint
- Removed option to set custom label
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Version 0.5 - November 13, 2015:
- Initial version.