THE SPACE, TELECOMMUNICATIONS AND RADIOSCIENCE (STAR) LABORATORY AT STANFORD HAS BEEN CONDUCTING A GLOBAL SURVEY OF EXTREMELY LOW FREQUENCY (ELF) AND VERY LOW FREQUENCY (VLF) RADIO NOISE SINCE FEBRUARY 1985. EIGHT MEASUREMENT STATIONS AROUND THE WORLD RECORD THE INSTANTANEOUS NOISE AMPLITUDE IN EACH OF SIXTEEN NARROW FREQUENCY BANDS IN THE 10 Hz - 32 kHz FREQUENCY RANGE, AND THIS REPORT PRESENTS CALCULATIONS OF THE MONTHLY AVERAGES FOR THE FOUR STATIONS WITH THE LONGEST TIMES OF OPERATION. THE DATA PRESENTED HERE SUPPLEMENT THOSE IN A PAPER IN RADIO SCIENCE BY THE SAME AUTHORS; HOWEVER, THIS REPORT INCLUDES A MUCH MORE DETAILED AND EXTENSIVE PRESENTATION OF THE SEASONAL VARIATION DATA THAN DOES THE PUBLISHED PAPER. SPECIFICALLY, THIS REPORT CONTAINS: (1) SEASONAL VARIATION DATA FOR SPECIFIC DIURNAL TIME PERIODS, AND (2) THE SEASONAL VARIATIONS FOR INDIVIDUAL YEARS.