For PPG:
ADAPTIVE_THRESHOLD = 1
COUNT_ORIG_METHOD = 2
CLUSTERER_METHOD = 3
SLOPE_SUM_METHOD = 4
MOVING_AVERAGE_METHOD = 5
DEFAULT = 6
BILLAUER_METHOD = 7

For ECG:
HAMILTON = 1
CHRISTOV = 2
ENGZEE = 3
SWT = 4
MVA = 5
MTEMP = 6
PAN_TOMPKINS = 7