The historic_forex_data need for day_3 practise can be accessed on my google drive @ https://drive.google.com/folderview?id=0B0MdkEsxQHAQeFB6WHMzWEx6eGM&usp=sharing
NOTE: To use the avro file in day_4, extract the zip file in day_4/avro_data_file/000004_0.tar.gz in the same folder.