41Next, the existence of a substantial effect on the applicant’s position on the market does not depend directly on the amount of the aid, but on the significance of the adverse effect which that aid may have on that position. Such an adverse effect may vary, in respect of aid of a similar amount, in the light of criteria such as the size of the market concerned, the specific nature of the aid, the length of the period for which it was granted, whether the activity affected is the applicant’s main or ancillary activity, and the possibilities which the applicant has to circumvent the negative effects of the aid (see, to that effect, order in UPS Europe and United Parcel Service Deutschland v Commission, cited in paragraph 38 above, paragraph 58).