% Echo Location Surface Spectrum in units of mm/sqrt(Hz) % 128 Frequency Bands are 0.00781250 Hz wide 206 120 97 100 76 102 74 59 99 191 69 103 161 215 291 224 360 199 401 594 673 569 449 444 419 384 276 352 284 177 243 203 196 199 135 199 171 148 145 170 116 111 78 123 92 85 82 91 115 64 62 49 93 62 40 30 46 97 29 69 52 67 41 26 35 57 36 44 47 38 34 61 32 25 -20 39 62 18 43 34 61 63 44 31 -22 62 53 59 31 19 21 54 3 -40 27 28 -12 39 -32 -31 48 -21 23 15 -36 -17 -39 24 17 19 27 -29 -14 45 -11 -20 -28 49 42 -21 16 23 -28 29 -29 9 -21 -28