The aim of this WP5 is to specify the impact of TID in EGNOS, N-RTK and HF systems through statistical correlation of the performance data recorded from system operators and of TID detection results. The analysis will be applied on data for at least one solar cycle.At a deeper level, this deliverable 5.1 is devoted to collect and organize a long time series of records in order to perform the design of the database and the definition of the strategy for gathering service performances and monitor outputs. Following this approach, the strategy comprises the following steps:1. A data set composed of 71 days has been selected according to the events list in WP3 (drivers) and the EGNOS degradation list provided by ESSP. Tests detailed on WP5.3 are going to be executed on this 71 days data set.2. Definition and design of the database, in such a way it allows an easy and understandable reading of the monitors, drivers and performance of database.3. Determination of the strategy for measuring the degradation of the EGNOS service at specific locations and even at wide regions.4. Definition of the strategy for measuring the degradation of the NRTK services.

This deliverable 5.1 is devoted to collect and organize a long time series of records in order to perform the design of the database and the definition of the strategy for gathering service performances and monitor outputs. Following this approach, the strategy comprises the following steps:1. A data set composed of 71 days has been selected according to the events list in WP3 (drivers) and the EGNOS degradation list provided by ESSP. Tests detailed on WP5.3 are going to be executed on this 71 days data set.2. Definition and design of the database, in such a way it allows an easy and understandable reading of the monitors, drivers and performance of database.3. Determination of the strategy for measuring the degradation of the EGNOS service at specific locations and even at wide regions.4. Definition of the strategy for measuring the degradation of the NRTK services.