% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 302 192 171 164 164 142 140 198 248 337 215 210 218 445 295 344 191 186 159 144 153 194 124 134 90 125 102 89 77 107 89 89 88 106 59 50 110 77 54 66 84 81 43 53 39 72 31 58 31 72 57 71 50 28 71 -17 55 25 21 64 59 -39 34 63 39 -31 -19 41 22 8 -15 -34 57 -14 -15 29 49 40 46 17 51 12 -31 56 82 11 45 -23 45 76 -17 32 52 -1 -7 35 22 -35 -35 -18 24 -8 22 61 -26 -31 -22 50 -18 11 8 -40 -20 58 13 8 -32 -43 41 -6 -15 -43 29 24 -39 -31 -32 72