A relative humidity level between 40% and 50% is generally considered to be the most comfortable. Anywhere from 30% to 60% is acceptable, but ideally you want to avoid the extremes of that range.
Ancient Greek civilization began around 1600 BC, at Mycenae and in Crete. It ended with the annexation of Greece by Rome in 146 BC. It was at its height around 431 BC, when the Peloponnesian War between Sparta and Athens began.
Most other forms of History knowledge and accountability of the ancient Greeks we know is because of temples, sculpture, pottery, artefacts and other archaeological findings. NEOLITHIC PERIOD (6000 - 2900 BC) According to historians and archeological findings, the Neolithic Age in Greece lasted from 6800 to 3200 BC.