This set of instances contains 18 instances for the service network design for short and local food supply chain (SND-SLSC).
They are based on a medium sized instance (M)
The set of products is separated in two categories of the same size (fruits and vegetables). 
One half of the farmers produce only fruits while the other half produce only vegetables. 
Clients and hubs are randomly located on an area of 100 km by 50 km.
Spatial repartition of the farmers is clustered (C) with area with high density.
Moreover the spatial repartition of fruits farmers and vegetables farmers is partitioned (P), i.e. areas are dedicated to fruits or to vegetables. 
Hence instances' name starts with 'M-CP' and then 3 numbers states for:
- the number of hubs
- the maximal number of opened hubs
- the scope of actions for hubs
In the 18 instances clients and farmers have the same location and the same supply and demand.
When instances have the same number of hubs, these hubs have the same location.
Starting from the instance with the minimum number of hub, the other ones are generated adding only the necessary new hubs location.

Description of the raw data in the files:
- F = number of farmers
- C = number of clients
- H = number of hubs
- P = number of products
- T = number of periods
- Nt = number of sub-periods
- Hmax = maximal number of opened hubs
- dmax_fc = scope of action for direct delivery from farmers to clients
- dmax_h = scope of action for hubs
- S = maximum supply of farmers (one line describes one farmer and in each line is the quantity for all the products)
- D = demand of clients (each set of P lines describes the demand for one client, and in each line is the demand of one product for all the periods)
- d_hf = distance from hubs to farmers
- d_ch = distance from clients to hubs
- d_hh = distance from hubs to hubs
- d_fc = distance from farmers to clients
- s = seasonality (one line describes a product and in each line is the seasonality of the product for all the periods)

Data for SND-SLSC:
- maximum supply and demand need to be multiplied by seasonality
- C_fi (fixed shipping cost from farmer f to client c) = 2*0.8*d_fc
- C_hc (fixed cost for delivery of client c from hub h) = 4
- c_hi (unit shipping cost from hub h to client or hub i) = 0.18
- l_ct^p (unit penalty cost for non satisfaction of client c for product p in period t) = 10*D_ct^p