loo 90 80 70 FREQUENGY OF LOW AGTIVITY (™} “LD-. ~ TUMBLER -SNAPPER ivy (EASTERN UNITEO STATES) (UNITED STATES) 60 |. 50 t 40 ¥, % ee 30 VY (WORTH PACIFIC) “20 - . wong TRACE OMT-003 a 604-916 ON-O30 . D.BI~LOe : “] 101-38,00 "¢ WONE FASCE : t Of1-008 904-010 ON-OEN OSI-108 401-8 00 one TAACE Buta ee OO GOR 004-510 Balai aint eis O1I-020 OB1-100 101-3.06 “ TWENTY-FOUR-HOUR PRECIPITATION (INCHES) Figure 6.) Frequency of low activity (less than 100 d/m counting day) versus precipitation amounts “~