Referential set duration table — set_duration

The set duration (min) is calculated from catch weight (t), according to a linear function with two parameters a and b:
\(set_duration = a \times catch_weight + b\).
These are found through this reference table, for each year, ocean, fishing school and country.
Furthermore, a specific value provided for a null set (a fishing set without any catches associated).

data(set_duration_ref, package="t3")

Format

set_duration_ref: data frame with 819 rows and 9 columns:

year: Year, type integer.
flag_code: Country code, type integer.
flag_code_iso_3: 3 letter ISO country codes, type character.
ocean_code: Ocean code, type integer. For example ocean_code=1 for the Atlantic Ocean and ocean_code=2 the Indian Ocean
school_type_code_avdth: School type code in AVDTH referential template, type integer, (1 for floating object school, 2 for free school and 3 for undetermined school).
school_type_code_observe: School type code in Observe referential template, type integer, (1 for floating object school, 2 for free school and 0 for undetermined school).
parameter_a: Slope of the linear function giving the duration of the set as a function of the catch weight, type double.
parameter_b: Intercept of the linear function giving the duration of the set as a function of the catch weight, type double.
null_set_value: Specific duration value (min) provided for a null set (a fishing set without any catches associated), type double.