diff --git a/OpenExposureData/Docs/OpenExposureData_Spec.xlsx b/OpenExposureData/Docs/OpenExposureData_Spec.xlsx
index 572761ec..77a4f00f 100644
Binary files a/OpenExposureData/Docs/OpenExposureData_Spec.xlsx and b/OpenExposureData/Docs/OpenExposureData_Spec.xlsx differ