% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 113 116 85 46 67 58 54 45 64 66 169 291 405 676 1054 581 609 523 669 516 598 337 302 343 255 298 248 264 316 319 140 217 156 168 148 219 215 112 151 139 134 115 106 71 106 71 85 75 71 72 64 65 64 60 55 69 38 68 54 53 50 36 35 43 42 11 45 26 41 36 37 37 17 21 27 -20 10 7 34 16 19 -16 31 11 19 -23 17 33 -26 23 22 -15 13 -12 -11 -15 18 -23 -12 9 -16 21 -3 -15 16 -16 -14 20 -12 -25 -19 -11 -2 23 3 17 -8 -8 16 13 8 18 25 -14 -19 -4 10 -20