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	private static int rank1Limit = 60*5; // in minutes

	private static int rank2Limit = 60*15; // in minutes

	private static int rank3Limit = 60*30; // in minutes

	private static int rank4Limit = 60*100; // in minutes

	private static int rank5Limit = 60*300; // in minutes

	private static int rank6Limit = 60*1000; // in minutes