Table 1. Data volumes of publicly available circadian omic databases.

Source	Experiments	Tissues	Species	Total data pts. (est.)
CircadiOmics	227	23	8	≈74 600 000
CircaDB	30	15	2	<1 800 000
DIURNAL	11	3	3	≈3 009 600
BIOCLOCK	2	2	2	≈3 600 000
CirGRDB	50	<20	2	≈9 000 000

Comparison of CircadiOmics with other circadian repositories. Experiments refers to the total number of experimental level datasets from each source. An experimental level dataset should contain at least two time points, more than one replicate at each time point, and time series data for a substantial number of molecular species–at least 1000 for transcriptome and acetylome, and at least 100 for metabolome and proteome–and each replicate. Total data points provide an estimate of the total number of individual measurements taken across different time points, replicates and molecular species. Numbers are collected from internal statistics for CircadiOmics and from publications, or official websites, for the other sources. Details are provided in Supplementary Material.