AGGREGATION_MONTH_KEY = 'months'
AGGREGATION_DAY_KEY = 'days'
AGGREGATION_HOUR_KEY = 'hours'

DATETIME_KEY = 'datetime'

COUNT_KEY = 'count'
SUM_KEY = 'sum'
SUM2_KEY = 'sum2'
MIN_KEY = 'min'
MAX_KEY = 'max'
MEAN_KEY = 'mean'
STD_KEY = 'std'

METADATA_COLLECTION_NAME = 'mongots__metadata'
