Monthly summary: Ongeim'l Tketau
Number of Mastigias medusae in the lake is approximately: 6.6 million (accuracy ± 2 million).
The greatest number of Mastigias medusae ever recorded in the lake was 31 million (accuracy ± 8 million) in January 2005.
Prior to 2003, the greatest number of Mastigias medusae recorded in the lake, since measurements began in December 1998, was 24 million (accuracy ± 1 million) in September 2004.
The smallest number of Mastigias medusae ever recorded in the lake was zero from May to December 1999.
1. Accuracy is 95% confidence interval.
2. Updated monthly, around the middle of each month.