Frantoino: This variety of olive tree is the most hardy of the ones you've mentioned. They can withstand a range of about 10-30 F (-11 to -1 C) but fruit may become damaged just above the lower range.
Coratina: These olive trees are also less hardy. Lower ranges are between 20-30 F (-6 to -1 C) The tree will be in danger at these lower ranges.
Laccino: These trees should not drop below 22-25 F (-6 to -4 C) When winter temperatures are above average, greater than 50 F (10 C) fruit can be effected.