MOI is Mediterranean Oscillation Index, available at 
https://crudata.uea.ac.uk/cru/data/moi/

References:
Conte, M., Giuffrida, A., and Tedesco, S., 1989: The Mediterranean Oscillation. Impact on precipitation and hydrology in Italy Climate Water. Publications of the Academy of Finland, Helsinki
Palutikof, J.P., Conte, M., Casimiro Mendes, J., Goodess, C.M., Espirito Santo, F., 1996: Climate and climate change. In: Brandt, C.J., Thornes, J.B., (eds) Mediterranean desertification and land use. John Wiley and Sons, London
Palutikof, J.P., 2003: Analysis of Mediterranean climate data: measured and modelled. In: Bolle, H.J. (ed): Mediterranean climate: Variability and trends. Springer-Verlag, Berlin

The directory includes (daily values):
moi1.output.dat 	8 kilobytes	MOI: Algiers and Cairo 
moi2.output.dat 	8 kilobytes	MOI: Israel and Gibraltar

formatted as:
for year = 1948 to 2016
  for month = 1 to 12
    format(F5.0, 2F3.0, F7.3) year, month, day, value
Missing values represented by -99.99 

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fz 25.8.2017; last update: 2.9.17