arkL edit interval

select id,columnx from arkL_columns where dataset_id like 4

The age-window currently being used to search for terms for autocompletion is 18.351 -> 121.451 Ma.

intervalx:	C31has added abv?id: 2652 sort:9
alternative_term:	block label:
formal term:
interval_type:
parent_interval:
dataset:	magnetochronology (dataset id = 4)
alt dataset:	(dataset id = )
TSC Column:	id:122
stage:
polarity:
colour:
interval_notes:
compilation_notes:
refs to add:
linked refs:
preset_duration:
preset_duration_notes:
tracecode	; Q2top from event age; Q1base from event age; Q3a duration from base & top

	age		event	event_id	age	age2020
Top:	68.3510	<---	base C30	2996	68.351	00068.3510
Base:	71.4510	<---	base C31	2998	71.451	00071.4510
base notes				comp notes

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