(HEALTH IS WEALTH) An elephant is preparing for the coming Olympics. Although he practiced in weightlifting everyday during the past year, he randomly selected a day from each month and noted the weightlifting record as: Month Jan Feb Mar April May Jun Jul Aug Sep Oct Nov Dec Weight 242 241 273 227 225 222 246 246 248 249 246 235 Find the difference between UIF and the LIF, that is, compute UIF-LIF.

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