Date	Amb_Median 	STD_Median	Amb_Mean	STD_Mean
1998/1/1	362.2	403.2	361.3	402.1
1998/1/2	310.6	345.4	311.5	346.0
1998/1/3	251.9	280.8	251.9	280.8
1998/1/4	245.4	272.4	276.1	306.7
1998/1/5	1540.6	1698.2	1533.1	1692.0
1998/1/6	1311.4	1444.8	1319.3	1453.6
1998/1/7	NA	NA	NA	NA
1998/1/8	624.8	682.8	596.3	652.1
1998/1/9	324.9	358.4	327.9	361.1
1998/1/10	261.4	290.2	271.6	301.2
1998/1/11	300.9	332.3	318.3	351.7
1998/1/12	353.4	388.9	388.2	427.6
1998/1/13	484.9	535.4	500.7	553.7
1998/1/14	643.0	713.1	554.4	614.7
1998/1/15	450.4	497.6	457.9	506.2
1998/1/16	957.3	1055.5	1038.4	1145.0
1998/1/17	653.4	720.5	654.3	721.3
1998/1/18	379.7	418.2	418.6	460.9
1998/1/19	352.8	388.4	352.8	388.4
1998/1/20	278.2	308.3	279.5	308.9
1998/1/21	241.4	267.5	243.3	269.7
1998/1/22	217.6	241.3	213.1	236.1
1998/1/23	202.5	223.9	213.3	236.0
1998/1/24	402.2	445.5	411.4	456.3
1998/1/25	332.9	369.2	331.1	367.0
1998/1/26	365.7	404.8	368.6	408.6
1998/1/27	315.0	350.2	320.8	356.5
1998/1/28	282.6	312.6	289.7	321.0
1998/1/29	255.2	282.1	256.2	283.3
1998/1/30	282.5	311.3	282.5	311.3
1998/1/31	278.9	306.1	276.7	303.9
1998/2/1	365.5	401.8	360.5	396.2
1998/2/2	317.7	351.2	325.9	360.5
1998/2/3	300.9	334.0	295.4	327.9
1998/2/4	240.2	266.9	255.4	283.7
1998/2/5	397.2	443.4	341.2	382.7
1998/2/6	175.0	196.6	190.5	213.7
1998/2/7	523.2	579.7	474.2	525.1
1998/2/8	300.7	332.8	345.3	382.3
1998/2/9	526.5	580.8	542.0	597.4
1998/2/10	427.0	469.6	440.0	483.5
1998/2/11	393.8	434.9	404.7	447.5
1998/2/12	525.2	581.5	510.0	564.8
1998/2/13	524.7	583.7	522.3	581.8
1998/2/14	454.6	509.1	464.1	519.7
1998/2/15	601.6	671.2	592.2	661.6
1998/2/16	527.0	585.4	514.5	570.3
1998/2/17	398.8	439.0	394.7	434.8
1998/2/18	751.2	826.3	744.0	818.6
1998/2/19	420.5	464.5	435.2	480.1
1998/2/20	318.5	354.2	324.6	360.7
1998/2/21	217.3	241.0	207.4	230.3
1998/2/22	125.2	138.8	166.1	184.0
1998/2/23	326.8	362.1	330.4	366.1
1998/2/24	554.0	611.7	529.7	585.1
1998/2/25	707.2	781.4	709.0	783.4
1998/2/26	484.4	536.4	494.4	547.6
1998/2/27	349.6	386.8	347.2	383.9
1998/2/28	396.9	440.0	408.3	451.9
1998/3/1	201.4	222.7	198.0	218.8
1998/3/2	235.0	259.8	260.2	286.7
1998/3/3	184.5	204.9	187.1	208.3
1998/3/4	211.9	234.8	523.3	581.9
1998/3/5	249.0	275.4	285.5	315.4
1998/3/6	408.0	462.6	587.4	654.7
1998/3/7	569.4	632.0	561.5	627.2
1998/3/8	353.3	389.6	604.9	666.5
1998/3/9	914.5	1012.7	927.3	1027.7
1998/3/10	733.5	811.9	732.9	812.2
1998/3/11	538.1	592.0	508.7	559.7
1998/3/12	789.8	866.8	732.8	805.5
1998/3/13	805.6	891.7	804.0	889.8
1998/3/14	643.4	712.2	642.9	711.6
1998/3/15	628.4	691.9	622.0	684.8
1998/3/16	544.7	598.3	524.9	576.9
1998/3/17	543.1	607.9	524.6	586.6
1998/3/18	491.7	552.1	499.2	559.8
1998/3/19	360.3	401.7	358.7	400.8
1998/3/20	376.3	428.2	313.4	355.2
1998/3/21	158.0	178.7	162.6	183.8
1998/3/22	168.7	188.8	201.7	226.3
1998/3/23	418.7	470.4	408.3	458.8
1998/3/24	356.0	399.6	350.3	393.2
1998/3/25	290.5	325.8	309.1	345.4
1998/3/26	207.8	230.8	214.1	237.3
1998/3/27	223.1	248.2	262.0	291.3
1998/3/28	205.5	228.5	209.4	232.8
1998/3/29	162.5	180.4	169.2	188.0
1998/3/30	143.4	160.0	167.1	186.4
1998/3/31	266.2	296.8	268.2	300.2
1998/4/1	213.3	241.3	215.6	243.7
1998/4/2	165.8	184.7	171.2	191.0
1998/4/3	150.2	167.2	149.6	166.5
1998/4/4	218.1	243.2	210.9	235.3
1998/4/5	144.5	160.8	152.6	169.9
1998/4/6	194.2	219.4	193.6	218.7
1998/4/7	209.2	233.8	193.1	215.7
1998/4/8	155.4	171.8	171.2	189.5
1998/4/9	159.3	177.3	164.3	182.4
1998/4/10	136.3	153.2	143.4	161.1
1998/4/11	126.0	141.1	118.2	132.5
1998/4/12	154.1	171.8	158.5	176.7
1998/4/13	111.8	124.9	118.0	131.7
1998/4/14	138.6	154.0	153.1	170.2
1998/4/15	154.4	171.4	152.1	169.0
1998/4/16	128.2	143.9	129.9	145.8
1998/4/17	137.0	153.6	132.4	148.8
1998/4/18	184.3	205.7	177.8	198.6
1998/4/19	184.5	206.4	179.9	201.8
1998/4/20	142.6	161.9	142.6	161.9
1998/4/21	NA	NA	NA	NA
1998/4/22	64.9	73.5	65.9	74.8
1998/4/23	79.8	89.5	79.5	89.4
1998/4/24	107.7	121.5	110.0	123.6
1998/4/25	93.7	104.4	92.8	103.1
1998/4/26	97.5	109.4	98.9	110.8
1998/4/27	171.7	193.3	333.6	377.9
1998/4/28	121.3	136.5	218.3	247.1
1998/4/29	161.5	178.9	153.5	170.0
1998/4/30	125.8	139.9	129.2	143.5
1998/5/1	122.9	137.7	176.8	199.3
1998/5/2	161.6	178.9	225.0	249.9
1998/5/3	187.0	209.6	287.9	321.3
1998/5/4	220.1	245.0	273.1	303.5
1998/5/5	171.5	190.0	175.5	194.4
1998/5/6	103.5	114.6	119.5	131.9
1998/5/7	108.7	120.9	107.0	119.0
1998/5/8	101.9	112.1	102.8	113.3
1998/5/9	157.7	173.6	275.3	306.0
1998/5/10	65.2	73.3	114.3	128.2
1998/5/11	77.0	83.9	80.4	88.4
1998/5/12	84.5	92.3	85.9	93.8
1998/5/13	109.0	118.2	105.2	114.5
1998/5/14	153.1	166.4	154.3	167.7
1998/5/15	139.0	153.4	137.8	151.8
1998/5/16	118.3	130.7	178.7	198.2
1998/5/17	93.8	104.9	101.6	113.5
1998/5/18	143.3	159.0	140.9	156.5
1998/5/19	50.5	55.7	50.9	56.1
1998/5/20	54.3	59.6	56.5	61.9
1998/5/21	145.4	159.4	141.3	155.4
1998/5/22	112.5	125.2	383.5	428.8
1998/5/23	76.8	85.6	97.3	108.5
1998/5/24	55.7	61.8	56.0	62.1
1998/5/25	189.9	210.6	221.8	246.1
1998/5/26	43.7	48.9	149.7	166.8
1998/5/27	95.9	105.3	130.2	143.4
1998/5/28	56.1	62.1	59.4	65.7
1998/5/29	53.2	60.1	53.1	59.8
1998/5/30	77.0	87.0	80.2	90.6
1998/5/31	96.8	107.7	98.1	109.5
1998/6/1	84.3	93.5	84.3	93.5
1998/6/2	382.2	431.5	393.7	443.4
1998/6/3	620.6	697.9	702.2	787.4
1998/6/4	553.1	622.2	1101.6	1230.2
1998/6/5	326.2	364.2	1089.3	1227.1
1998/6/6	55.5	60.8	63.1	69.2
1998/6/7	86.3	96.6	146.0	162.6
1998/6/8	144.0	159.6	180.9	199.2
1998/6/9	61.0	67.0	66.9	73.8
1998/6/10	78.7	87.5	87.7	97.7
1998/6/11	97.0	107.5	101.4	112.4
1998/6/12	92.9	102.6	83.3	91.6
1998/6/13	75.0	82.7	88.4	97.3
1998/6/14	76.8	85.6	99.1	109.8
1998/6/15	61.8	69.4	62.7	70.5
1998/6/16	195.7	218.2	195.7	218.2
1998/6/17	86.5	96.2	141.4	157.4
1998/6/18	68.8	76.6	71.9	80.0
1998/6/19	71.2	79.0	68.6	76.0
1998/6/20	35.7	39.4	42.0	46.4
1998/6/21	34.2	37.8	35.8	39.6
1998/6/22	24.8	27.5	21.6	24.0
1998/6/23	23.3	26.0	27.3	30.4
1998/6/24	83.3	92.4	81.7	90.6
1998/6/25	154.1	170.2	193.7	213.9
1998/6/26	61.1	67.6	62.4	69.0
1998/6/27	133.3	146.2	140.7	154.4
1998/6/28	77.2	84.6	78.7	86.2
1998/6/29	87.0	95.5	102.3	112.4
1998/6/30	1214.0	1374.3	1461.5	1651.2
1998/7/1	760.9	838.5	620.4	683.8
1998/7/2	137.8	153.3	139.8	155.5
1998/7/3	152.9	170.3	245.4	274.2
1998/7/4	58.5	64.7	64.2	71.1
1998/7/5	221.2	248.1	257.8	289.4
1998/7/6	178.6	199.1	161.8	180.4
1998/7/7	52.7	57.7	54.4	59.6
1998/7/8	71.5	79.1	70.0	78.2
1998/7/9	110.9	124.9	111.3	125.5
1998/7/10	82.9	93.1	118.6	133.6
1998/7/11	510.4	584.7	602.2	688.6
1998/7/12	229.1	255.9	317.6	359.0
1998/7/13	82.2	91.1	95.1	105.5
1998/7/14	73.5	81.5	73.2	81.1
1998/7/15	64.2	70.1	64.2	70.1
1998/7/16	72.5	79.6	81.7	90.0
1998/7/17	168.7	186.9	211.7	235.1
1998/7/18	87.5	96.5	92.5	102.0
1998/7/19	61.5	67.4	57.6	63.2
1998/7/20	NA	NA	NA	NA
1998/7/21	70.8	78.2	76.5	84.5
1998/7/22	66.0	72.9	65.9	72.9
1998/7/23	470.8	523.2	492.0	546.3
1998/7/24	532.0	587.3	437.6	483.2
1998/7/25	58.0	63.5	90.5	99.1
1998/7/26	NA	NA	NA	NA
1998/7/27	287.2	316.9	320.4	353.3
1998/7/28	511.7	563.5	483.9	533.8
1998/7/29	NA	NA	NA	NA
1998/7/30	137.6	154.6	140.4	157.9
1998/7/31	131.5	147.0	136.1	152.0
1998/8/1	113.2	126.2	116.9	130.2
1998/8/2	76.9	85.9	80.8	90.1
1998/8/3	74.9	83.1	73.2	81.1
1998/8/4	NA	NA	NA	NA
1998/8/5	NA	NA	NA	NA
1998/8/6	65.0	73.2	65.6	73.9
1998/8/7	114.5	127.4	186.8	207.9
1998/8/8	135.2	150.2	132.6	147.8
1998/8/9	61.1	68.6	61.8	69.4
1998/8/10	59.5	67.5	62.0	70.4
1998/8/11	62.8	70.7	62.8	70.7
1998/8/12	111.5	123.4	112.8	124.9
1998/8/13	NA	NA	NA	NA
1998/8/14	89.9	99.4	93.0	102.7
1998/8/15	78.5	85.9	78.5	85.9
1998/8/16	109.7	118.8	109.7	118.8
1998/8/17	97.6	107.5	97.6	107.5
1998/8/18	90.7	99.9	95.2	104.6
1998/8/19	48.3	52.7	51.6	56.5
1998/8/20	306.5	339.6	404.5	448.2
1998/8/21	90.0	98.8	112.2	122.7
1998/8/22	NA	NA	NA	NA
1998/8/23	NA	NA	NA	NA
1998/8/24	154.3	171.0	154.8	171.6
1998/8/25	127.2	141.0	117.0	129.6
1998/8/26	108.0	120.0	125.1	138.7
1998/8/27	87.3	97.3	90.0	100.2
1998/8/28	NA	NA	NA	NA
1998/8/29	270.4	306.1	244.2	276.3
1998/8/30	306.8	341.4	259.6	289.2
1998/8/31	173.7	192.3	166.4	184.2
1998/9/1	158.0	176.1	168.2	187.1
1998/9/2	101.8	113.3	101.8	113.3
1998/9/3	117.7	129.2	131.5	144.4
1998/9/4	299.7	337.6	492.7	554.0
1998/9/5	416.1	464.4	549.8	614.8
1998/9/6	261.0	288.5	326.4	360.9
1998/9/7	190.0	211.0	429.0	476.2
1998/9/8	214.3	237.0	225.1	248.8
1998/9/9	190.2	208.4	198.7	218.1
1998/9/10	166.8	181.8	166.8	181.8
1998/9/11	139.7	153.7	257.3	282.0
1998/9/12	226.5	249.0	268.6	295.8
1998/9/13	295.9	327.2	483.1	533.6
1998/9/14	276.4	313.4	1760.7	1991.2
1998/9/15	268.5	298.2	1581.7	1770.8
1998/9/16	213.4	238.3	222.1	247.6
1998/9/17	133.7	147.5	157.5	174.1
1998/9/18	206.3	227.9	238.7	264.0
1998/9/19	69.5	78.1	189.4	211.7
1998/9/20	721.9	802.5	842.0	940.4
1998/9/21	330.8	369.0	463.6	515.3
1998/9/22	200.4	221.5	217.7	241.6
1998/9/23	181.7	201.4	177.4	196.2
1998/9/24	270.2	300.7	270.2	300.7
1998/9/25	334.1	370.9	327.6	363.9
1998/9/26	486.0	535.0	441.2	485.8
1998/9/27	603.3	666.2	1206.9	1335.3
1998/9/28	207.5	230.9	161.2	179.1
1998/9/29	114.3	126.3	162.9	180.7
1998/9/30	172.1	190.0	158.7	175.6
1998/10/1	242.7	274.3	266.5	299.4
1998/10/2	289.5	322.5	312.9	349.2
1998/10/3	251.2	277.5	249.0	275.0
1998/10/4	270.7	300.4	271.1	300.7
1998/10/5	238.8	265.1	251.2	278.8
1998/10/6	NA	NA	NA	NA
1998/10/7	254.2	280.7	253.8	280.5
1998/10/8	399.3	443.3	408.5	457.7
1998/10/9	114.7	130.8	219.1	249.7
1998/10/10	245.8	271.4	296.0	329.4
1998/10/11	306.4	336.2	307.9	337.9
1998/10/12	384.3	422.7	384.9	423.1
1998/10/13	379.4	417.8	349.3	387.8
1998/10/14	153.4	171.4	173.3	194.0
1998/10/15	307.3	338.8	338.5	375.3
1998/10/16	369.9	410.0	365.6	404.7
1998/10/17	290.8	321.0	296.8	327.9
1998/10/18	270.6	298.7	280.8	310.5
1998/10/19	238.3	265.3	228.2	254.6
1998/10/20	206.3	228.9	206.5	229.1
1998/10/21	NA	NA	NA	NA
1998/10/22	293.2	325.1	297.1	329.5
1998/10/23	444.7	490.0	454.3	500.5
1998/10/24	422.8	462.9	422.8	462.9
1998/10/25	488.5	536.6	499.0	548.3
1998/10/26	477.7	527.8	490.7	541.7
1998/10/27	460.3	510.2	457.2	506.9
1998/10/28	423.5	468.5	419.8	464.6
1998/10/29	337.0	375.6	361.1	402.3
1998/10/30	399.5	444.6	407.8	453.4
1998/10/31	615.9	690.9	601.7	673.5
1998/11/1	277.1	308.1	291.9	325.7
1998/11/2	252.7	279.3	257.6	284.8
1998/11/3	281.0	308.7	286.8	315.6
1998/11/4	293.0	324.0	302.2	333.8
1998/11/5	258.4	284.7	258.4	284.7
1998/11/6	265.2	293.5	269.4	297.8
1998/11/7	249.2	276.6	265.3	295.3
1998/11/8	366.9	411.4	365.1	409.1
1998/11/9	333.1	372.1	336.9	376.8
1998/11/10	351.2	388.3	343.7	380.5
1998/11/11	518.3	591.2	524.0	595.5
1998/11/12	411.3	464.2	487.5	552.5
1998/11/13	372.9	416.4	382.8	427.3
1998/11/14	390.2	436.3	403.8	451.1
1998/11/15	401.4	446.4	404.6	449.7
1998/11/16	430.0	477.7	428.2	476.8
1998/11/17	502.4	566.6	523.5	589.5
1998/11/18	754.5	847.5	710.7	799.4
1998/11/19	461.1	513.5	463.3	515.1
1998/11/20	723.0	801.7	720.3	799.3
1998/11/21	419.0	461.5	414.6	457.3
1998/11/22	430.4	476.2	812.9	903.4
1998/11/23	859.9	967.7	906.4	1017.1
1998/11/24	424.2	477.6	432.5	487.3
1998/11/25	288.1	324.5	650.5	730.9
1998/11/26	305.7	344.6	297.3	335.3
1998/11/27	NA	NA	NA	NA
1998/11/28	446.9	499.0	469.1	523.8
1998/11/29	575.2	644.8	547.2	613.9
1998/11/30	594.9	661.9	593.3	660.4
1998/12/1	477.8	527.2	480.8	530.7
1998/12/2	531.8	592.4	539.1	599.6
1998/12/3	465.0	522.1	437.2	489.6
1998/12/4	236.2	263.0	237.5	264.1
1998/12/5	347.2	390.5	349.8	395.3
1998/12/6	262.0	293.6	268.4	301.4
1998/12/7	372.2	412.2	374.9	415.6
1998/12/8	400.2	448.6	427.3	478.2
1998/12/9	508.9	566.6	489.8	546.0
1998/12/10	536.1	602.1	559.5	627.4
1998/12/11	634.8	713.9	631.8	710.5
1998/12/12	405.8	453.7	398.7	445.8
1998/12/13	335.1	373.5	343.7	383.4
1998/12/14	293.2	325.0	286.5	317.9
1998/12/15	294.7	326.6	294.0	325.7
1998/12/16	277.2	306.2	302.4	334.0
1998/12/17	643.9	713.8	612.7	678.8
1998/12/18	NA	NA	NA	NA
1998/12/19	NA	NA	NA	NA
1998/12/20	NA	NA	NA	NA
1998/12/21	NA	NA	NA	NA
1998/12/22	NA	NA	NA	NA
1998/12/23	NA	NA	NA	NA
1998/12/24	NA	NA	NA	NA
1998/12/25	NA	NA	NA	NA
1998/12/26	NA	NA	NA	NA
1998/12/27	NA	NA	NA	NA
1998/12/28	NA	NA	NA	NA
1998/12/29	NA	NA	NA	NA
1998/12/30	NA	NA	NA	NA
1998/12/31	157.0	172.1	157.0	172.2