expedition_assist_options

id-assistlevelassist
1-Unassisted
2-Assisted Resupplies
3-Assisted Emergency
4-Assisted HAP (applies to mountaineering expeditions)
5-n/a


expedition_support_options

id-supportlevel
1-Unsupported
2-Sail Support
3-Dog Support
4-Motorized Support
5-Oxygen Support
6-n/a


expedition_style_options

id-stylelevel
1-Unguided
2-Guided
3-Solo
4-Alpine Style
5-Expedition Style
6-n/a


Following fields added to expedition_info
assist_id
support_id
style_id


POLAR RANK

	DISTANCE		ASSIST		SUPPORT		STYLE


8	crossing/return		unassisted	sailsupported	unguided
7	crossing/return		resupplied	sailsupported	unguided

	



6	full		unsupported	unassisted
	
4	full		unsupported	resupplied	
3	full		sail/dog	unassisted