passage: Passage survival and time from Fremont Weir to Chipps Island
In fishsciences/YoloBypassSBM: Yolo Bypass Salmon Benefits Model

Passage survival and time (days) from Fremont Weir to Chipps Island based on fork length, flow, and route

passage(
  water_year_string,
  date_index,
  abundance,
  fork_length,
  route = c("Sac", "Yolo")
)

`water_year_string`	Water year (1997-2011) as a string
`date_index`	Index of date in a water year that cohort begins passage; in all years except WY1997, equivalent to day of water year
`abundance`	Abundance of cohort on day route entered
`fork_length`	Fork length (mm) at Fremont Weir
`route`	Route: Sacramento River (Sac) or Yolo Bypass (Yolo)