The mean value of annual precipitation for both the Sava River Basin and the Adriatic Sea Basin has not changed significantly in the period 1961— 2014 (table 6.3). In the period 1991-2014, annual precipitation in the Sava River Basin was 44 mm higher than in the period 1961-1990. However, the range has increased (769 mm compared with 407 mm) and the minimum value is lower at 100 mm, whereas the maximum value is higher at 262 mm. Accordingly, the value of variance is significantly higher in the period 1991-2014.