nsr2db/nsr018 : NN/RR = 0.980665 AVNN = 0.775735 SDNN = 0.126725 SDANN = 0.131827 SDNNIDX = 0.0470103 rMSSD = 0.0261381 pNN20 = 0.345698 pNN50 = 0.0481729 TOT PWR = 0.0158922 ULF PWR = 0.0131978 VLF PWR = 0.00155143 LF PWR = 0.000849335 HF PWR = 0.00029372 LF/HF = 2.89165