Kelley, M. C. (Cornell Univ. Ithaca, NY, United States)
Kintner, P. M. (Cornell Univ. Ithaca, NY, United States)
Kudeki, E. (Cornell University Ithaca, N.Y., United States)
Holmgren, G. (Cornell Univ. Ithaca, NY, United States)
Bostrom, R. (Uppsala Ionospheric Observatory, Uppsala, Sweden)
Fahleson, U. V. (Cornell Univ. Ithaca, NY, United States)