runoff coefficient of period of time

artifical increase of precipitation precipitation

Concentrated period of precipitation

Concentrating period of precipitation

Concentrative period of precipitation

Monthly Precipitation Time Series

Precipitation Time Series

Reconstruction of precipitation series

the precipitation of crop-growing season

(+)Period of time interrupt

a period of time

analysis of time series

analysis of time-series

Characteristic of effectiveness for a giv-en period of time

characteristics of time-series

correlation of time series

Different Period of Time

effectiveness for a given period of time

effectiveness for a period of time