Figure 9: Transmission spectrum of the filter changing with temperature. Spectra were calculated using spectra from the LED measured separately at the appropriate temperatures. Wavelength (nm) 10°C 15°C 20°C 25°C 30°C 335.014 1.988819842 1.882956324 1.801848813 1.768088915 1.707533111 335.091 2.114822788 1.986897273 1.920829636 1.858730334 1.80076149 335.168 2.233278164 2.11595346 2.014932025 1.963872751 1.893569641 335.245 2.383359898 2.241135867 2.142278947 2.085331754 2.011562752 335.321 2.520896117 2.383368888 2.276580283 2.205555923 2.103125213 335.398 2.683762455 2.536358449 2.429090889 2.353021566 2.251616865 335.475 2.840277325 2.678365487 2.578623782 2.468625923 2.372504799 335.552 3.051671692 2.880432742 2.75393363 2.658686858 2.53933164 335.629 3.24153375 3.061598919 2.930586521 2.812117756 2.709861544 335.705 3.457487038 3.27559242 3.115266928 2.997170185 2.865500329 335.782 3.701652613 3.49969232 3.341317334 3.20064017 3.057899567 335.859 3.979411307 3.762061033 3.566166663 3.413153876 3.260664145 335.936 4.266749228 4.034047678 3.8328505 3.666146766 3.500494047 336.012 4.604975667 4.358317752 4.132510548 3.948483868 3.764785522 336.089 4.945036724 4.668950784 4.434468353 4.227525984 4.01308759 336.166 5.35330935 5.046794179 4.77907219 4.546798554 4.324771963 336.243 5.780335447 5.436699096 5.154029999 4.890304034 4.631934349 336.320 6.25479569 5.881529886 5.567385656 5.288242755 4.993715102 336.396 6.764864381 6.370452206 6.022645208 5.708383093 5.409237245 336.473 7.349720052 6.906768361 6.535187926 6.17531729 5.848493473 336.550 7.965525027 7.481644782 7.075428201 6.701246984 6.298201692 336.626 8.651273205 8.146898354 7.701336682 7.268813608 6.841762565 336.703 9.416450979 8.850999649 8.3642211 7.875811845 7.399666565 336.780 10.26184387 9.660233471 9.097183162 8.563412604 8.051591228 336.857 11.19647112 10.50838473 9.914913636 9.302351075 8.744076956 336.933 12.22287205 11.44929227 10.8073794 10.13230876 9.520192785 337.010 13.32721729 12.49097569 11.7655374 11.02546365 10.35350989 337.087 14.52843056 13.63251516 12.82062468 12.01923583 11.27464757 337.164 15.8581544 14.87219936 13.9787884 13.09597831 12.26334077 337.240 17.29839584 16.25376033 15.26817356 14.31929716 13.4094427 337.317 18.88729431 17.74665723 16.66641179 15.62005709 14.65405932 337.394 20.54014051 19.31690256 18.16331189 17.02431085 15.97986274 337.470 22.30014644 20.99892278 19.73240293 18.52250158 17.40491087 337.547 24.12451484 22.77245008 21.4324359 20.16538025 18.98721043 337.624 26.06488348 24.66730728 23.22812871 21.91227719 20.6633807 337.700 28.11590022 26.66616239 25.19793205 23.80191741 22.49255988 337.777 30.16505178 28.69217558 27.16372138 25.71272211 24.34873702 337.854 32.26856765 30.83048892 29.24969224 27.76416347 26.31639806 337.930 34.40990431 32.96463073 31.34633367 29.83918508 28.33093852 338.007 36.46058687 35.0481519 33.44328239 31.92297791 30.38004471 338.084 38.57883901 37.17353261 35.58271102 34.05908151 32.48861234 338.160 40.59009021 39.26895018 37.63854585 36.19029621 34.64078999 338.237 42.41275249 41.13039789 39.61426752 38.20353543 36.71028954 338.314 44.22030459 43.00842435 41.58743569 40.21305453 38.72958625 338.390 45.80127518 44.71640747 43.39567807 42.06300017 40.66254259 338.467 47.21458475 46.26141075 45.04181635 43.79685512 42.49312939 338.543 48.46481256 47.6371668 46.55197183 45.35868857 44.14437821 338.620 49.60954064 48.93131161 47.94815204 46.82230882 45.73319527 338.697 50.60836968 50.03096954 49.15095595 48.13048931 47.12009446 338.773 51.40053599 50.97583117 50.15266521 49.24753688 48.39637547 338.850 52.1017721 51.73727963 51.05124507 50.21529673 49.49653357 338.927 52.72888712 52.45129596 51.82346626 51.03967493 50.42832206 339.003 53.23643351 53.03185321 52.48134171 51.7223828 51.23603393 339.080 53.74719993 53.59737355 53.08529355 52.35428525 51.93350774 339.156 54.04964704 53.96133471 53.48922805 52.81955298 52.50010046 339.233 54.42586918 54.36557097 53.93475623 53.308583 53.02552032 339.310 54.56169362 54.5476201 54.12580734 53.5637749 53.34511959 339.386 54.75821885 54.80713301 54.41972655 53.90939283 53.69300804 339.463 54.95095191 54.94204998 54.59117616 54.11080393 53.9509692 339.539 55.06542656 55.10531994 54.78381895 54.29496551 54.13465538 339.616 55.05792737 55.11592772 54.80636721 54.39455944 54.17938769 339.692 54.97402603 55.07536334 54.81990921 54.40086884 54.23710828 339.769 54.76665768 54.93865684 54.68788539 54.36258229 54.22413514 339.846 54.60301772 54.80478436 54.59460664 54.29412873 54.23079524 339.922 54.09523072 54.34023535 54.20051093 54.03431286 54.01323758 339.999 53.59133688 53.94971348 53.87789422 53.79168642 53.85458486 340.075 52.90586546 53.34339685 53.38237789 53.35697916 53.52527212 340.152 51.97960576 52.62453639 52.77126275 52.76885965 53.10783844 340.228 50.94069489 51.67873051 51.94507749 52.02516321 52.47066898 340.305 49.72553877 50.62432684 50.9946193 51.19363662 51.85605518 340.381 48.2420958 49.26980902 49.79193306 50.09606899 50.86941299 340.458 46.63484041 47.80484765 48.4661731 48.91147643 49.85248267 340.534 44.80753855 46.05898734 46.89823123 47.48936834 48.53677431 340.611 42.93527955 44.23341529 45.26547906 45.98889599 47.08673145 340.687 40.92140038 42.28253867 43.4569612 44.29652116 45.47857876 340.764 38.8136468 40.21236228 41.43914816 42.40599891 43.68298077 340.840 36.57371627 37.99800724 39.32062629 40.38356872 41.68947339 340.917 34.38404608 35.82308766 37.16349904 38.31595114 39.67694608 340.993 32.18408349 33.61223921 34.9588129 36.14174866 37.52409367 341.070 30.01348338 31.41265622 32.77089413 33.97827704 35.37717799 341.146 27.86356326 29.23787407 30.57339019 31.77997121 33.17709438 341.223 25.80330164 27.12975413 28.39312737 29.59632395 30.96437965 341.299 23.89507977 25.11145554 26.35904232 27.49672362 28.8688307 341.376 22.0624355 23.22191313 24.40173069 25.47520676 26.77165024 341.452 20.34914411 21.40379772 22.53189794 23.5346298 24.79716515 341.529 18.75449566 19.6900716 20.73829988 21.69382084 22.90311624 341.605 17.26244687 18.14362243 19.11530536 20.00310618 21.12038907 341.682 15.89007495 16.70371785 17.58498874 18.39861358 19.46293483 341.758 14.64680236 15.36322427 16.18518008 16.95186466 17.91722682 341.834 13.49392237 14.15072611 14.92270148 15.59384392 16.50655599 341.911 12.42779949 13.01333839 13.72038015 14.34117312 15.1752336 341.987 11.46034397 11.98851158 12.63426233 13.18912233 13.94237679 342.064 10.58432375 11.07183357 11.65147732 12.14640122 12.83439832 342.140 9.79422972 10.21540548 10.74489796 11.20931552 11.83854194 342.217 9.056690372 9.463664939 9.934069003 10.35032482 10.90397897 342.293 8.387901688 8.727710073 9.170068429 9.555007187 10.06556712 342.369 7.797613885 8.114144432 8.502016768 8.8433171 9.30463529 342.446 7.249400809 7.517881555 7.865108094 8.19840724 8.620562805 342.522 6.728230306 6.9810059 7.285733711 7.578757692 7.970314621 342.599 6.272539273 6.495925386 6.768738665 7.036836426 7.384338125 342.675 5.855377152 6.059619706 6.30785656 6.543238129 6.872127404 342.751 5.475202263 5.641749192 5.873162289 6.083794385 6.377039224 342.828 5.14313689 5.296141546 5.495611185 5.68108447 5.956573268 342.904 4.829424945 4.955520165 5.134478606 5.303566195 5.557250589 342.981 4.535530313 4.643216686 4.819750756 4.959217849 5.198405526 343.057 4.262498462 4.355536907 4.511417093 4.653091522 4.872296343 343.133 4.031060644 4.110937851 4.253963313 4.378490146 4.569314575 343.210 3.787696302 3.859749312 3.991941182 4.088921616 4.275221878 343.286 3.57842782 3.640009853 3.76194435 3.864415959 4.041358129 343.362 3.385189171 3.435610076 3.552438512 3.642968071 3.790162353 343.439 3.217483674 3.251802397 3.363880147 3.439070718 3.588416591 343.515 3.033918522 3.068072949 3.175867185 3.244909081 3.378483424 343.591 2.893005406 2.921042196 3.018051537 3.086620778 3.210765357 343.668 2.734499957 2.753376711 2.848335231 2.911519886 3.017175141 343.744 2.615789102 2.637677743 2.716812948 2.775019075 2.874522692 343.820 2.480383301 2.504288828 2.572694005 2.632947028 2.721588066 343.897 2.3738439 2.377762803 2.464699001 2.520483506 2.596067592 343.973 2.26846654 2.274927049 2.335348281 2.387181903 2.461654832 344.049 2.172112541 2.163294722 2.240574863 2.277788225 2.356575446