- 28 - an outdoor exercise yard to be constructed at the Aspropyrgus Holding Facility and daily outdoor exercise at the Petrou Ralli Holding Facility to be provided (paragraph 39); - immediate steps to be taken to provide appropriate living conditions in the Mytilini Special Facility for Irregular Migrants, in the light of the remarks in paragraph 40 (paragraph 40); - with respect to all the centres visited, the Greek authorities to ensure that:  the occupancy rates are revised so as to offer a minimum of 4m² of space per detainee;  all detainees are offered a bed or plinth, blanket and mattress, all clean;  all detainees have unimpeded access to toilet facilities, including at night;  all detainees are allowed to spend a large proportion of the day outside their cells and to have at least one hour of outdoor exercise a day;  sufficient quantities of detergent and products for personal hygiene are made available to detainees at all times (paragraph 44); - the necessary steps to be taken to draw up and implement, as soon as possible, operating standards for both the special facilities for irregular migrants and the police holding facilities (paragraph 45); - the necessary steps to be taken to provide an appropriate range of activities for persons detained in the special facilities for irregular migrants and the police holding facilities (paragraph 46); - the staff complement attached to each special facility for irregular migrants and police holding facility to be reviewed (paragraph 47); - steps to be taken to ensure that all persons detained in facilities for irregular migrants are offered sufficient food, including at least one cooked meal (preferably warm) per day (paragraph 48); - the medical staffing complement available for the Amygdaleza, Filakio, Mytilini and Petrou Ralli facilities to be increased (paragraph 49); - a sufficiently staffed and equipped health care service for the Aspropyrgus and Thessaloniki police holding facilities to be established (paragraph 49); - systematic medical screening of all detained irregular migrants, including for transmissible diseases, to be introduced (paragraph 51). comments - the Peplos and Vrissika special facilities for irregular migrants should be fully reconstructed and extensively refurbished before being reopened (paragraph 37). requests for information - the remarks of the Greek authorities on the withdrawal of the NGO ‘Médecins sans Frontières’ from the Mytilini facility (paragraph 50).