D4 (Instances with four depots)

P21_MD.txt

P22_MD.txt

P23_MD.txt

P24_MD.txt

R01_MD.txt

R03_MD.txt

R05_MD.txt

R06_MD.txt

R07_MD.txt

R08_MD.txt

R09_MD.txt

R10_MD.txt

R11_MD.txt

R12_MD.txt

R13_MD.txt

R13_MD.txt

R14_MD.txt

R14_MD.txt

R15_MD.txt

R16_MD.txt