 Time)
       Group                   : Group (Integer)
       AdcResolution           : Bit resolution of the singal (String)
       AdcZero                 : Physical value for 0 ADC (double)
       Baseline                : Physical zero level of signal (Integer)
       CheckSum                : 16-bit checksum of all samples (Integer)
       Format                  : WFDB's Format of the samples (String)
       Gain                    : ADC units per physical unit (String)
       InitialValue           