! UNDULATOR POLE TIP MEASUREMENT DATA POINTS - PRETUNING ! UNDULATOR S/N 04 ! MEASUREMENT DATE : 03-SEP-2009 ! ! POLE TIP - POLE TIP NUMBER ! INC ANG - INCLUDED ANGLE BETWEEN TOP AND BOTTOM POLE TIPS ! SYM ANG - ANLGLE OF SYMMETRY AXIS BETWEEN POLE TIPS WITH ZX PLANE OF EVALUATION CSY ! MID PNT - MID POINT BETWEEN TOP AND BOTTOM POLE TIPS AT X = 0(YZ PLANE) ! POLE GAP - DISTANCE BETWEEN TOP AND BOTTOM POLE TIPS AT X = 0 (YZ PLANE) ! TOP AT X=0 - POINT ON TOP POLE TIP AT X = 0 ! BTM AT X=0 - POINT ON BOTTOM POLE TIP AT X = 0 ! BTM X FACE - POINT ON X FACE OF BOTTOM POLE TIP 10MM BELOW Y CENTERLINE ! TOP X FACE - POINT ON X FACE OF TOP POLE TIP 10MM ABOVE Y CENTERLINE ! ! ! !-------------------------------------------------------------------------------------- !POLE | INC | SYM | MID | POLE | TOP AT | BTM AT | BTM X | TOP X | ! TIP | ANG | ANG | PNT | GAP | X = 0 | X = 0 | FACE | FACE | !-------------------------------------------------------------------------------------- 1 0.3121 179.985 0.0071 6.9581 3.4862 -3.4719 -74.572 -75.277 2 0.2843 179.995 0.0019 6.9481 3.4760 -3.4721 -74.536 -75.258 3 0.2918 179.998 0.0076 6.9399 3.4775 -3.4624 -74.680 -75.268 4 0.2966 179.994 0.0110 6.9441 3.4830 -3.4611 -74.635 -75.266 5 0.2896 179.993 0.0107 6.9500 3.4857 -3.4643 -74.733 -75.261 6 0.2893 179.994 0.0125 6.9491 3.4871 -3.4621 -74.742 -75.258 7 0.2810 179.993 0.0129 6.9553 3.4906 -3.4647 -74.805 -75.280 8 0.2881 179.995 0.0083 6.9534 3.4850 -3.4684 -74.814 -75.266 9 0.2925 179.994 0.0097 6.9582 3.4888 -3.4694 -74.814 -75.269 10 0.2889 179.995 0.0058 6.9583 3.4850 -3.4733 -74.796 -75.280 11 0.2834 179.997 0.0047 6.9651 3.4873 -3.4778 -74.827 -75.274 12 0.2831 179.990 0.0054 6.9779 3.4943 -3.4835 -74.864 -75.281 13 0.2913 179.988 0.0091 6.9760 3.4971 -3.4788 -74.857 -75.217 14 0.2835 179.987 -0.0090 6.9487 3.4653 -3.4834 -74.916 -75.320 15 0.2736 179.988 -0.0078 6.9424 3.4634 -3.4790 -74.880 -75.334 16 0.2838 179.988 -0.0069 6.9348 3.4605 -3.4743 -74.908 -75.348 17 0.2887 179.994 -0.0086 6.9361 3.4595 -3.4766 -74.915 -75.336 18 0.2917 179.993 -0.0065 6.9329 3.4600 -3.4729 -74.965 -75.338 19 0.2890 179.990 -0.0067 6.9318 3.4593 -3.4726 -74.931 -75.341 20 0.2903 179.991 -0.0094 6.9442 3.4627 -3.4815 -74.962 -75.337 21 0.2839 179.990 -0.0025 6.9374 3.4662 -3.4712 -74.942 -75.358 22 0.2820 179.993 -0.0095 6.9546 3.4678 -3.4868 -74.939 -75.370 23 0.2872 179.994 -0.0041 6.9509 3.4714 -3.4796 -75.507 -75.369 24 0.2861 179.989 -0.0079 6.9483 3.4662 -3.4821 -75.496 -75.393 25 0.2926 179.991 -0.0060 6.9343 3.4612 -3.4731 -75.529 -75.409 26 0.2910 179.993 -0.0030 6.9358 3.4649 -3.4709 -75.433 -75.393 27 0.2981 179.997 -0.0053 6.9433 3.4663 -3.4770 -75.429 -75.539 28 0.2979 179.996 -0.0068 6.9521 3.4693 -3.4828 -75.409 -75.541 29 0.2900 179.996 -0.0045 6.9511 3.4711 -3.4801 -75.408 -75.500 30 0.2850 179.995 -0.0046 6.9659 3.4784 -3.4876 -75.387 -75.550 31 0.2900 179.995 -0.0033 6.9637 3.4785 -3.4852 -75.411 -75.527 32 0.2928 179.993 -0.0020 6.9586 3.4773 -3.4813 -75.399 -75.543 33 0.2920 179.992 0.0003 6.9564 3.4785 -3.4779 -75.392 -75.533 34 0.2958 179.992 0.0032 6.9500 3.4781 -3.4718 -75.385 -75.525 35 0.3047 179.992 0.0046 6.9469 3.4781 -3.4688 -75.396 -75.562 36 0.2958 179.986 0.0042 6.9550 3.4817 -3.4733 -75.404 -75.549 37 0.2971 179.989 0.0046 6.9581 3.4836 -3.4745 -75.389 -75.535 38 0.2821 179.990 0.0010 6.9630 3.4825 -3.4805 -75.384 -75.552 39 0.2840 179.996 0.0020 6.9510 3.4774 -3.4735 -75.380 -75.517 40 0.2926 179.993 0.0044 6.9412 3.4750 -3.4662 -75.388 -75.533 41 0.3016 179.993 0.0067 6.9490 3.4812 -3.4678 -75.375 -75.511 42 0.2988 179.993 0.0083 6.9420 3.4793 -3.4627 -75.393 -75.500 43 0.2987 179.994 0.0070 6.9322 3.4731 -3.4591 -75.395 -75.486 44 0.2923 179.987 0.0080 6.9432 3.4796 -3.4636 -75.389 -75.492 45 0.2974 179.991 0.0031 6.9511 3.4787 -3.4724 -75.368 -75.528 46 0.2853 179.993 0.0069 6.9687 3.4913 -3.4774 -75.389 -75.504 47 0.2887 179.991 0.0072 6.9638 3.4891 -3.4747 -75.364 -75.498 48 0.2949 179.991 0.0080 6.9488 3.4823 -3.4664 -75.379 -75.505 49 0.2912 179.995 0.0077 6.9454 3.4804 -3.4650 -75.380 -75.488 50 0.3019 179.993 0.0049 6.9452 3.4775 -3.4677 -75.388 -75.483 51 0.3020 179.994 0.0049 6.9505 3.4802 -3.4704 -75.417 -75.455 52 0.3015 179.990 0.0006 6.9506 3.4759 -3.4747 -75.385 -75.526 53 0.2980 179.995 0.0004 6.9458 3.4732 -3.4725 -75.394 -75.506 54 0.2974 179.997 0.0010 6.9508 3.4764 -3.4744 -75.408 -75.530 55 0.2975 179.995 0.0002 6.9570 3.4787 -3.4782 -75.384 -75.512 56 0.2982 179.995 -0.0028 6.9453 3.4699 -3.4755 -75.357 -75.511 57 0.2988 179.993 0.0004 6.9464 3.4736 -3.4728 -75.384 -75.500 58 0.3063 179.998 -0.0002 6.9333 3.4665 -3.4668 -75.360 -75.478 59 0.3027 179.996 0.0035 6.9338 3.4704 -3.4634 -75.368 -75.477 60 0.2964 179.997 -0.0022 6.9363 3.4660 -3.4703 -75.369 -75.447 61 0.2925 179.996 -0.0018 6.9356 3.4660 -3.4696 -75.372 -75.442 62 0.2892 179.995 -0.0019 6.9506 3.4734 -3.4772 -75.365 -75.438 63 0.2903 179.995 -0.0043 6.9505 3.4710 -3.4796 -75.329 -75.420 64 0.2950 179.998 0.0016 6.9466 3.4749 -3.4717 -75.344 -75.420 65 0.3031 179.996 -0.0035 6.9346 3.4638 -3.4707 -75.332 -75.426 66 0.3006 179.998 -0.0026 6.9309 3.4628 -3.4680 -75.354 -75.398 67 0.2947 179.993 -0.0028 6.9343 3.4643 -3.4700 -75.321 -75.399 68 0.3010 179.993 -0.0021 6.9370 3.4664 -3.4706 -75.327 -75.396 69 0.2954 179.991 -0.0024 6.9389 3.4671 -3.4719 -75.339 -75.388 70 0.2808 179.997 0.0001 6.9465 3.4733 -3.4731 -75.355 -75.366 71 0.2897 179.993 -0.0030 6.9444 3.4693 -3.4752 -75.331 -75.340 72 0.2956 179.994 -0.0013 6.9376 3.4674 -3.4701 -75.300 -75.354 73 0.2961 179.991 -0.0016 6.9380 3.4674 -3.4706 -75.293 -75.350 74 0.2969 179.991 0.0019 6.9332 3.4685 -3.4647 -75.302 -75.348 75 0.2886 179.992 0.0030 6.9366 3.4713 -3.4653 -75.301 -75.324 76 0.2911 179.992 0.0031 6.9408 3.4735 -3.4673 -75.316 -75.325 77 0.2767 179.990 0.0019 6.9441 3.4739 -3.4702 -75.304 -75.316 78 0.2694 179.992 -0.0001 6.9471 3.4735 -3.4736 -75.290 -75.299 79 0.2638 179.996 0.0016 6.9649 3.4841 -3.4809 -75.267 -75.314 80 0.2761 180.000 -0.0044 6.9751 3.4831 -3.4920 -75.262 -75.322 81 0.2731 179.992 -0.0105 6.9974 3.4882 -3.5092 -75.064 -75.349 82 0.2712 179.992 -0.0092 6.9785 3.4800 -3.4985 -75.048 -75.359 83 0.2891 179.993 -0.0101 6.9676 3.4737 -3.4939 -75.078 -75.329 84 0.2869 179.993 -0.0124 6.9641 3.4696 -3.4944 -75.077 -75.360 85 0.2644 179.983 -0.0100 6.9584 3.4692 -3.4892 -75.095 -75.381 86 0.2862 179.992 -0.0116 6.9435 3.4601 -3.4834 -75.096 -75.379 87 0.2897 179.991 -0.0117 6.9351 3.4558 -3.4793 -75.095 -75.312 88 0.2822 179.991 -0.0105 6.9414 3.4602 -3.4812 -75.091 -75.345 89 0.2807 179.989 -0.0117 6.9462 3.4613 -3.4848 -75.113 -75.390 90 0.2908 179.987 -0.0112 6.9499 3.4637 -3.4862 -75.104 -75.397 91 0.2849 179.989 -0.0164 6.9371 3.4521 -3.4850 -75.105 -75.423 92 0.2879 179.991 -0.0163 6.9248 3.4461 -3.4787 -75.133 -75.407 93 0.2952 179.997 -0.0142 6.9251 3.4484 -3.4768 -75.168 -75.379 94 0.2898 179.996 -0.0158 6.9221 3.4452 -3.4769 -75.307 -75.441 95 0.2878 179.993 -0.0179 6.9177 3.4410 -3.4767 -75.328 -75.440 96 0.2850 179.997 -0.0175 6.9279 3.4464 -3.4814 -75.334 -75.354 97 0.2808 179.996 -0.0229 6.9386 3.4464 -3.4922 -75.323 -75.394 98 0.2802 179.992 -0.0210 6.9352 3.4467 -3.4886 -75.314 -75.401 99 0.2890 179.992 -0.0175 6.9338 3.4494 -3.4844 -75.342 -75.441 100 0.2949 179.998 -0.0150 6.9294 3.4497 -3.4797 -75.318 -75.423 101 0.2945 179.993 -0.0156 6.9385 3.4536 -3.4849 -75.321 -75.410 102 0.2972 179.991 -0.0139 6.9336 3.4529 -3.4807 -75.299 -75.412 103 0.2989 179.992 -0.0169 6.9401 3.4532 -3.4870 -75.308 -75.421 104 0.2894 179.992 -0.0145 6.9489 3.4600 -3.4890 -75.274 -75.372 105 0.2851 179.989 -0.0143 6.9565 3.4639 -3.4925 -75.282 -75.406 106 0.2805 179.995 -0.0144 6.9603 3.4658 -3.4945 -75.301 -75.406 107 0.2924 179.991 -0.0135 6.9498 3.4614 -3.4884 -75.273 -75.409 108 0.2921 179.991 -0.0125 6.9466 3.4608 -3.4858 -75.260 -75.398 109 0.2937 179.994 -0.0120 6.9366 3.4563 -3.4803 -75.295 -75.401 110 0.2903 179.991 -0.0142 6.9420 3.4568 -3.4852 -75.299 -75.282 111 0.2943 179.990 -0.0164 6.9378 3.4526 -3.4853 -75.270 -75.362 112 0.2891 179.992 -0.0146 6.9537 3.4622 -3.4915 -75.285 -75.368 113 0.2837 179.993 -0.0158 6.9649 3.4667 -3.4982 -75.276 -75.392 114 0.2886 179.989 -0.0156 6.9654 3.4671 -3.4983 -75.273 -75.399 115 0.2815 179.991 -0.0131 6.9536 3.4637 -3.4899 -75.274 -75.361 116 0.2951 179.996 -0.0108 6.9412 3.4598 -3.4814 -75.295 -75.386 117 0.2936 179.994 -0.0098 6.9369 3.4587 -3.4782 -75.302 -75.422 118 0.2920 179.993 -0.0109 6.9393 3.4588 -3.4805 -75.310 -75.446 119 0.2980 179.992 -0.0089 6.9406 3.4614 -3.4792 -75.320 -75.447 120 0.2881 179.996 -0.0158 6.9438 3.4561 -3.4877 -75.319 -75.414 121 0.2731 179.998 -0.0156 6.9509 3.4599 -3.4910 -75.312 -75.417 122 0.2782 179.993 -0.0121 6.9541 3.4649 -3.4892 -75.303 -75.402 123 0.2865 179.992 -0.0173 6.9508 3.4581 -3.4927 -75.275 -75.415 124 0.2903 179.996 -0.0127 6.9367 3.4557 -3.4810 -75.313 -75.423 125 0.2957 179.996 -0.0129 6.9383 3.4562 -3.4821 -75.311 -75.414 126 0.3003 179.994 -0.0143 6.9370 3.4542 -3.4828 -75.285 -75.414 127 0.2862 180.000 -0.0111 6.9454 3.4616 -3.4838 -75.305 -75.414 128 0.2896 179.994 -0.0137 6.9545 3.4635 -3.4910 -75.300 -75.392 129 0.2802 179.993 -0.0155 6.9683 3.4686 -3.4997 -75.284 -75.419 130 0.2830 179.989 -0.0132 6.9637 3.4686 -3.4950 -75.268 -75.410 131 0.2868 179.994 -0.0111 6.9539 3.4659 -3.4880 -75.321 -75.411 132 0.2878 180.000 -0.0155 6.9521 3.4606 -3.4916 -75.295 -75.381 133 0.2983 179.992 -0.0163 6.9496 3.4585 -3.4911 -75.276 -75.396 134 0.2973 179.995 -0.0164 6.9465 3.4569 -3.4896 -75.306 -75.369 135 0.2940 179.996 -0.0163 6.9478 3.4576 -3.4902 -75.276 -75.400 136 0.2870 179.995 -0.0158 6.9603 3.4644 -3.4960 -75.291 -75.365 137 0.2784 179.993 -0.0161 6.9584 3.4631 -3.4953 -75.301 -75.377 138 0.2797 179.991 -0.0133 6.9638 3.4686 -3.4952 -75.297 -75.359 139 0.2942 179.991 -0.0111 6.9585 3.4682 -3.4903 -75.291 -75.374 140 0.2894 179.996 -0.0151 6.9454 3.4575 -3.4878 -75.303 -75.351 141 0.2899 179.994 -0.0130 6.9460 3.4600 -3.4860 -75.277 -75.355 142 0.2883 179.996 -0.0143 6.9379 3.4547 -3.4833 -75.284 -75.390 143 0.2884 179.995 -0.0145 6.9409 3.4560 -3.4850 -75.294 -75.367 144 0.2836 179.995 -0.0136 6.9416 3.4572 -3.4845 -75.275 -75.349 145 0.2777 179.994 -0.0132 6.9516 3.4626 -3.4890 -75.280 -75.333 146 0.2879 179.997 -0.0122 6.9629 3.4692 -3.4937 -75.260 -75.353 147 0.2827 179.994 -0.0155 6.9695 3.4693 -3.5002 -75.284 -75.352 148 0.2751 179.989 -0.0339 6.9630 3.4476 -3.5153 -75.423 -75.481 149 0.2767 179.995 -0.0320 6.9613 3.4487 -3.5126 -75.437 -75.451 150 0.2890 179.992 -0.0285 6.9517 3.4473 -3.5044 -75.436 -75.471 151 0.2883 179.994 -0.0264 6.9351 3.4411 -3.4940 -75.386 -75.477 152 0.2906 179.993 -0.0258 6.9375 3.4429 -3.4946 -75.401 -75.435 153 0.2838 179.989 -0.0227 6.9439 3.4493 -3.4946 -75.301 -75.422 154 0.2904 179.994 -0.0235 6.9450 3.4490 -3.4960 -75.307 -75.427 155 0.2877 179.994 -0.0231 6.9503 3.4520 -3.4982 -75.291 -75.435 156 0.2785 179.988 -0.0232 6.9616 3.4577 -3.5040 -75.313 -75.477 157 0.2858 179.990 -0.0241 6.9567 3.4542 -3.5025 -75.297 -75.441 158 0.2847 179.990 -0.0212 6.9382 3.4479 -3.4903 -75.317 -75.414 159 0.2870 179.991 -0.0231 6.9371 3.4455 -3.4916 -75.306 -75.418 160 0.2950 179.994 -0.0178 6.9386 3.4515 -3.4871 -75.260 -75.434 161 0.2917 179.991 -0.0167 6.9354 3.4510 -3.4844 -75.316 -75.426 162 0.2823 179.994 -0.0159 6.9291 3.4487 -3.4804 -75.300 -75.400 163 0.2781 179.992 -0.0177 6.9319 3.4483 -3.4837 -75.276 -75.418 164 0.2677 179.995 -0.0167 6.9441 3.4553 -3.4888 -75.270 -75.411 165 0.2710 179.993 -0.0146 6.9447 3.4578 -3.4870 -75.266 -75.398 166 0.2719 179.985 -0.0130 6.9397 3.4568 -3.4829 -75.254 -75.385 167 0.2713 179.994 -0.0164 6.9353 3.4512 -3.4841 -75.262 -75.389 168 0.2811 179.993 -0.0146 6.9295 3.4501 -3.4794 -75.267 -75.391 169 0.2808 179.995 -0.0140 6.9313 3.4517 -3.4796 -75.262 -75.380 170 0.2789 179.996 -0.0129 6.9305 3.4523 -3.4782 -75.258 -75.393 171 0.2858 180.002 -0.0163 6.9363 3.4518 -3.4844 -75.271 -75.375 172 0.2689 179.994 -0.0110 6.9398 3.4589 -3.4809 -75.243 -75.375 173 0.2730 179.997 -0.0094 6.9425 3.4619 -3.4807 -75.249 -75.340 174 0.2716 179.992 -0.0034 6.9357 3.4644 -3.4713 -75.254 -75.359 175 0.2753 179.992 -0.0056 6.9295 3.4592 -3.4704 -75.269 -75.356 176 0.2773 179.996 -0.0053 6.9276 3.4585 -3.4691 -75.254 -75.342 177 0.2780 179.995 -0.0062 6.9305 3.4591 -3.4714 -75.255 -75.365 178 0.2719 179.998 -0.0038 6.9290 3.4607 -3.4683 -75.262 -75.361 179 0.2716 179.992 -0.0044 6.9405 3.4659 -3.4746 -75.202 -75.362 180 0.2582 179.996 -0.0031 6.9580 3.4759 -3.4821 -75.236 -75.339 181 0.2671 179.993 -0.0051 6.9566 3.4732 -3.4834 -75.225 -75.340 182 0.2789 179.994 -0.0027 6.9492 3.4719 -3.4773 -75.253 -75.340 183 0.2761 179.995 -0.0012 6.9396 3.4686 -3.4710 -75.255 -75.333 184 0.2900 180.000 0.0024 6.9396 3.4722 -3.4675 -75.226 -75.393 185 0.2919 179.995 -0.0009 6.9442 3.4712 -3.4730 -75.305 -75.417 186 0.2872 179.991 -0.0009 6.9469 3.4726 -3.4743 -75.305 -75.367 187 0.2825 179.993 0.0024 6.9525 3.4786 -3.4738 -75.229 -75.400 188 0.2787 179.991 0.0025 6.9618 3.4833 -3.4784 -75.284 -75.338 189 0.2835 179.992 -0.0001 6.9607 3.4802 -3.4805 -75.269 -75.342 190 0.2831 179.992 0.0005 6.9474 3.4742 -3.4732 -75.348 -75.359 191 0.2955 179.993 -0.0005 6.9427 3.4708 -3.4719 -75.291 -75.352 192 0.2893 179.993 -0.0003 6.9381 3.4688 -3.4693 -75.286 -75.368 193 0.2878 179.992 0.0024 6.9358 3.4703 -3.4654 -75.225 -75.388 194 0.2963 179.991 0.0033 6.9377 3.4722 -3.4655 -75.273 -75.368 195 0.2847 179.990 0.0038 6.9401 3.4739 -3.4662 -75.242 -75.366 196 0.2787 179.995 0.0066 6.9483 3.4808 -3.4675 -75.270 -75.186 197 0.2803 179.993 0.0055 6.9501 3.4805 -3.4696 -75.278 -75.329 198 0.2859 179.995 0.0043 6.9370 3.4728 -3.4642 -75.262 -75.294 199 0.2888 179.994 0.0063 6.9346 3.4736 -3.4610 -75.257 -75.328 200 0.2937 179.994 0.0050 6.9389 3.4744 -3.4645 -75.268 -75.333 201 0.2938 179.994 0.0067 6.9302 3.4718 -3.4584 -75.255 -75.331 202 0.2864 179.992 0.0026 6.9332 3.4692 -3.4640 -75.276 -75.351 203 0.2844 179.995 0.0064 6.9408 3.4769 -3.4640 -75.238 -75.349 204 0.2801 179.994 0.0113 6.9544 3.4885 -3.4659 -75.263 -75.222 205 0.2723 179.991 0.0051 6.9584 3.4843 -3.4741 -75.262 -75.333 206 0.2859 179.993 0.0104 6.9508 3.4858 -3.4650 -75.273 -75.348 207 0.2897 179.994 0.0072 6.9500 3.4822 -3.4678 -75.259 -75.313 208 0.3038 179.995 0.0086 6.9465 3.4819 -3.4646 -75.272 -75.182 209 0.2960 179.993 0.0095 6.9433 3.4812 -3.4621 -75.265 -75.338 210 0.2941 179.991 0.0107 6.9543 3.4878 -3.4665 -75.275 -75.345 211 0.2833 179.990 0.0117 6.9614 3.4923 -3.4690 -75.278 -75.339 212 0.2796 179.993 0.0132 6.9675 3.4970 -3.4706 -75.273 -75.326 213 0.2726 179.997 0.0096 6.9818 3.5005 -3.4813 -75.245 -75.289 214 0.2790 180.001 0.0121 6.9918 3.5080 -3.4837 -75.195 -75.326 215 0.2929 179.997 -0.0102 6.9776 3.4786 -3.4990 -74.969 -75.110 216 0.2843 180.002 -0.0079 6.9676 3.4758 -3.4917 -75.007 -75.091 217 0.2878 179.997 -0.0069 6.9580 3.4721 -3.4859 -75.008 -75.067 218 0.2767 180.000 -0.0042 6.9616 3.4766 -3.4850 -75.007 -75.094 219 0.2777 179.999 -0.0049 6.9557 3.4730 -3.4828 -75.017 -75.076 220 0.2744 179.997 -0.0101 6.9726 3.4762 -3.4964 -75.017 -75.108 221 0.2784 179.997 -0.0062 6.9548 3.4712 -3.4836 -75.056 -75.086 222 0.2862 179.999 -0.0046 6.9612 3.4759 -3.4852 -75.033 -75.102 223 0.2874 179.997 -0.0058 6.9638 3.4761 -3.4877 -75.049 -75.130 224 0.2839 179.994 0.0018 6.9706 3.4871 -3.4835 -75.084 -75.098 225 0.2764 179.994 0.0007 6.9812 3.4913 -3.4899 -75.059 -75.128 226 0.2862 179.997 -0.0008 6.9699 3.4841 -3.4857 -75.090 -75.131