P-mode gaps (or duplicate numbers) in sounding sequence: (The soundings numbered below exist, gaps are in between), 1294 to 2559 tr001295.p_g to tr002558.p_g are from the IDI measurements for UK (Aberysthwyth, BAS). A single copy has been made on CD-ROM which is either at BAS or EISCAT. Those CD-ROMS's are labelled: mar98p1 mar98p2 mar98p3 mar98p4 mar98p5