Calculate the IQR (to 4 decimal places) from the following list of values:
319.64, 316.15, 346.17, 270.33, 297.29, 280.55, 293.07, 351.73, 304.29, 288.03, 310.21, 292.41, 265.36, 296.39, 314.56, 297.79, 327.