empty
CLN: move to test_tank.py
TST: add testing clauses
CLN: remove unnecessary import
CLN: make entire function nogil
CLN: move read_tev to tank.py
TST: remove classmethod setup
TST: update move of read_tev tests accordingly
CLN: remove unused imports
CLN: move bin_data to utils.py
CLN: move clear_refrac to utils.py
CLN: various clean up