def MirrorRhoSpectrum():
    """Spectral reflectivity data for a glass mirror."""
    reflectivity = [[2500.0, 90.02169], [2490.0, 88.75519], [2480.0, 
        89.35681], [2470.0, 89.33026], [2460.0, 89.5964], [2450.0, 89.48807
        ], [2440.0, 89.30347], [2430.0, 89.87267], [2420.0, 89.69878], [
        2410.0, 89.85492], [2400.0, 89.83934], [2390.0, 90.15015], [2380.0,
        90.33044], [2370.0, 90.21459], [2360.0, 90.3662], [2350.0, 90.70931
        ], [2340.0, 90.9045], [2330.0, 91.0277], [2320.0, 91.56487], [
        2310.0, 91.87077], [2300.0, 91.85011], [2290.0, 91.68735], [2280.0,
        91.53958], [2270.0, 91.48136], [2260.0, 91.42628], [2250.0, 
        91.15726], [2240.0, 91.20969], [2230.0, 91.1791], [2220.0, 91.1626],
        [2210.0, 91.27687], [2200.0, 91.3185], [2190.0, 91.32679], [2180.0,
        91.34534], [2170.0, 91.14151], [2160.0, 90.68787], [2150.0, 
        90.51109], [2140.0, 90.48801], [2130.0, 90.50297], [2120.0, 
        91.01611], [2110.0, 91.29543], [2100.0, 91.70773], [2090.0, 91.912],
        [2080.0, 92.10053], [2070.0, 92.2489], [2060.0, 92.38735], [2050.0,
        92.65939], [2040.0, 92.94904], [2030.0, 93.20248], [2020.0, 
        93.60339], [2010.0, 93.94395], [2000.0, 94.45172], [1990.0, 
        94.81448], [1980.0, 95.14061], [1970.0, 95.37082], [1960.0, 
        95.62746], [1950.0, 95.857], [1940.0, 95.92551], [1930.0, 95.83197],
        [1920.0, 95.81526], [1910.0, 95.51694], [1900.0, 95.13596], [1890.0,
        94.82872], [1880.0, 94.50699], [1870.0, 94.33634], [1860.0, 
        94.31637], [1850.0, 94.32624], [1840.0, 94.47005], [1830.0, 
        94.59088], [1820.0, 94.78791], [1810.0, 94.96258], [1800.0, 
        95.18331], [1790.0, 95.25677], [1780.0, 95.36103], [1770.0, 
        95.42614], [1760.0, 95.43584], [1750.0, 95.39315], [1740.0, 
        95.36543], [1730.0, 95.3186], [1720.0, 95.36415], [1710.0, 95.38762
        ], [1700.0, 95.32991], [1690.0, 95.26815], [1680.0, 95.26891], [
        1670.0, 95.35363], [1660.0, 95.35061], [1650.0, 95.39629], [1640.0,
        95.43298], [1630.0, 95.47403], [1620.0, 95.53451], [1610.0, 
        95.46091], [1600.0, 95.44562], [1590.0, 95.4165], [1580.0, 95.36031
        ], [1570.0, 95.32507], [1560.0, 95.22473], [1550.0, 95.11299], [
        1540.0, 95.04054], [1530.0, 94.97032], [1520.0, 94.8476], [1510.0, 
        94.78913], [1500.0, 94.72796], [1490.0, 94.67186], [1480.0, 
        94.58646], [1470.0, 94.44527], [1460.0, 94.2582], [1450.0, 94.01962
        ], [1440.0, 93.79675], [1430.0, 93.53042], [1420.0, 93.18069], [
        1410.0, 92.9593], [1400.0, 92.76019], [1390.0, 92.60818], [1380.0, 
        92.44196], [1370.0, 92.26486], [1360.0, 92.20292], [1350.0, 
        92.19144], [1340.0, 92.1346], [1330.0, 92.10777], [1320.0, 92.08756
        ], [1310.0, 91.96632], [1300.0, 91.83512], [1290.0, 91.70703], [
        1280.0, 91.68185], [1270.0, 91.68346], [1260.0, 91.58861], [1250.0,
        91.50678], [1240.0, 91.4702], [1230.0, 91.45164], [1220.0, 91.44785
        ], [1210.0, 91.39342], [1200.0, 91.344], [1190.0, 91.30375], [
        1180.0, 91.23543], [1170.0, 91.19971], [1160.0, 91.17647], [1150.0,
        91.19447], [1140.0, 91.12846], [1130.0, 91.02717], [1120.0, 
        90.98567], [1110.0, 91.01431], [1100.0, 91.03447], [1090.0, 
        91.03535], [1080.0, 91.04751], [1070.0, 91.04776], [1060.0, 
        91.05524], [1050.0, 91.05882], [1040.0, 91.00527], [1030.0, 
        90.98834], [1020.0, 90.99553], [1010.0, 90.97986], [1000.0, 
        90.99072], [990.0, 91.01458], [980.0, 91.02811], [970.0, 91.07101],
        [960.0, 91.13153], [950.0, 91.15299], [940.0, 91.20361], [930.0, 
        91.29536], [920.0, 91.3441], [910.0, 91.39206], [900.0, 91.49245],
        [890.0, 91.62473], [880.0, 91.70761], [870.0, 91.75441], [860.0, 
        91.83147], [850.0, 91.93368], [840.0, 91.9469], [830.0, 91.71778],
        [820.0, 91.76028], [810.0, 92.01883], [800.0, 92.19911], [790.0, 
        92.31172], [780.0, 92.41025], [770.0, 92.57628], [760.0, 92.70184],
        [750.0, 92.94644], [740.0, 93.11713], [730.0, 93.25057], [720.0, 
        93.35799], [710.0, 93.42017], [700.0, 93.5963], [690.0, 93.74759],
        [680.0, 93.77639], [670.0, 93.82298], [660.0, 94.01642], [650.0, 
        94.14445], [640.0, 94.16447], [630.0, 94.22827], [620.0, 94.29821],
        [610.0, 94.40004], [600.0, 94.44127], [590.0, 94.35277], [580.0, 
        94.19932], [570.0, 94.12157], [560.0, 93.99156], [550.0, 93.70412],
        [540.0, 93.35538], [530.0, 93.32679], [520.0, 93.22582], [510.0, 
        92.9274], [500.0, 92.56215], [490.0, 92.0682], [480.0, 91.64663], [
        470.0, 91.13393], [460.0, 90.48467], [450.0, 89.66771], [440.0, 
        88.82944], [430.0, 88.00727], [420.0, 87.09829], [410.0, 86.30209],
        [400.0, 84.92516], [390.0, 82.32475], [380.0, 79.54367], [370.0, 
        76.80205], [360.0, 71.67577], [350.0, 61.86407], [340.0, 45.48824],
        [330.0, 23.74455], [320.0, 9.198518], [310.0, 5.704781], [300.0, 
        5.738476], [290.0, 5.864941], [280.0, 6.030176], [270.0, 6.278084],
        [260.0, 6.773841], [250.0, 7.919221]]
    return reflectivity
