% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 82 59 40 16 27 -38 84 72 107 108 124 173 210 307 264 581 378 241 363 220 172 212 238 146 99 93 86 100 52 38 21 54 61 41 75 41 -25 -24 -23 58 55 77 47 77 36 50 16 -16 53 56 56 36 61 68 -3 49 37 28 31 -18 -25 -32 -15 37 -17 30 44 13 -31 -35 -30 -10 -22 -30 20 -23 -36 -36 -36 -38 -21 -21 27 -32 -23 -23 -21 -30 -21 19 -29 -21 -22 -28 31 19 -15 -23 -13 31 43 20 -37 -28 -20 25 39 -25 -28 22 11 8 -20 29 -16 -16 -8 26 22 13 12 -22 -30 -10 -17 -26 28 -26