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		観測日数
2010
	January
	February
	March
	April
	May
	June
	July
	August
	September
	October
	November
	December

		観測日数
2009
	January	7 days
	February	4 days
	March	4 days
	April	3 days
	May	1 day
	June	0 days
	July	1 day
	August	1 day
	September	0 day
	October	5 days
	November	4 days
	December	11 days

		観測日数
2008
	January	8 days
	February	9 days
	March
	April
	May
	June
	July
	August
	September
	October
	November	2 days
	December	3 days

	観測年度

北陸地方上空で発生したスプライト

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