But some observations of short duration could be made by Carl Johannink. The peak time of the Quadrantids is known be varying and could be expected anywhere between solar longitudes 283.0 deg and 283.25 deg, corresponding to 1998 Jan 03, 13h30 UT and 19h30 UT respectively. The activity profile shows a plateau-like maximum structure, which has also been observed in previous years. We would like to thank the following observers for their quick data submission.
Error bars are the standard deviation of the average.