 - Positive seasonal allergen skin prick tests or duplicate seasonal allergen skin prick test with a summation flare greater than or equal to 20 mm larger than diluent control, and summation wheal greater than or equal to 6 mm larger than diluent control at the screening visit 1 see Appendix 17.1; the seasonal allergen testing that results in the greatest summation flare will be used for all subsequent seasonal allergen testing. 