The most important contributors are the collectors of the original data. Without their efforts, this compilation of data and information would not have been possible. Agencies that have been important contributors in the development of the GTSPP system are:presented below. Each participating agency carries out a number of functions in handling the data for the GTSPP. With each of the partners listed below a short description of their main contribution to the programme is provided. You are encouraged to contact any of the people listed here for more information. If you wish to provide data to the archive, or to get data in either real-time or delayed mode, you can contact the US NODC.