Abstract: The cumulative dose data are often used in radiation environmental assessment. Whether there is a significant difference in cumulative dose in different seasons is significant for the evaluation of cumulative dose involved in subsequent radiation environmental assessment. This paper collected the cumulative dose data from April 2021 to May 2022 in a North China region, conducted seasonal classification and studied the significant differences of the cumulative dose in different seasons. Through one-way analysis of variance, it was concluded that there were significant differences in the cumulative dose in different seasons.

Key words: cumulative dose, significant difference, one-way analysis of variance