my %months = (
	FEB => { W1 => 11.14,
	         W2 => 11.22, },
	MAR => { W1 => 33.17,
	         W2 => 44.44, },
	APR => { W1 => 55.00,
	         W2 => 66.66, },
);
my %limits = (
	FEB => { W1 => { L1 =>  11,    U1 =>  12.05 },
	         W2 => { L1 =>  13.06, U1 =>  13.06 }, },
	APR => { W1 => { L1 =>   1,    U1 =>  20    },
	         W2 => { L1 =>  33,    U1 =>  13.02 }, },
	MAR => { W1 => { L1 => -12.05, U1 => -14.0  },
	         W2 => { L1 =>  22.0,  U1 => -13.02 }, },
);