groupProj. UProj. WSCorr. UCorr. WS BLLCMPos. angler MU MP

12209 399.22 2228.01 315.35 1754.45 -14.44 246.40 -47.81 111.92 0.7657 -3.7 -45.4


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SDO HMI 2014-11-16 07:00:27 UT

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spotProj. UProj. WSCorr. UCorr. WSBLLCMPos. angler MU MP

1 0.00 1.03 0.00 0.52 -3.82 301.60 7.40 228.62 0.1722 907.0 673.1
2 0.00 1.38 0.00 0.69 -3.96 301.46 7.26 227.40 0.1720 1078.0 900.8
3 0.00 1.20 0.00 0.61 -10.80 295.17 0.97 184.09 0.2354 881.0 616.4
4 0.00 1.03 0.00 0.52 -7.39 287.92 -6.28 148.23 0.2069 815.0 659.9
5 0.00 2.41 0.00 1.24 -11.45 287.45 -6.75 154.75 0.2714 1027.0 752.9
6 0.00 0.77 0.00 0.41 -14.54 286.37 -7.83 156.00 0.3256 811.0 575.6
7 0.00 1.29 0.00 0.65 -5.03 285.37 -8.83 131.27 0.2043 933.0 687.6
8 0.00 1.12 0.00 0.59 -15.90 283.91 -10.29 151.65 0.3633 778.0 591.2
9 0.00 0.69 0.00 0.37 -15.66 281.98 -12.22 147.03 0.3762 777.0 527.4
10 0.00 0.86 0.00 0.49 -23.14 278.15 -16.05 149.65 0.5053 717.0 521.7
11 0.00 0.95 0.00 0.50 -11.65 278.67 -15.53 133.21 0.3614 515.0 468.3
12 0.00 1.98 0.00 1.05 -8.98 275.89 -18.31 122.83 0.3709 927.0 783.4
13 5.59 10.75 3.00 5.76 -8.96 274.78 -19.42 121.30 0.3860 1056.2 872.7
14 0.00 1.03 0.00 0.55 -8.39 274.62 -19.58 119.80 0.3837 438.0 456.6
15 8.00 10.58 4.29 5.68 -8.69 274.48 -19.72 120.31 0.3881 1077.4 746.4
16 0.00 2.15 0.00 1.16 -9.03 274.17 -20.03 120.68 0.3950 896.0 738.0
17 0.00 0.95 0.00 0.51 -9.59 273.69 -20.51 121.29 0.4061 852.0 661.5
18 0.00 1.38 0.00 0.78 -17.45 272.55 -21.65 134.14 0.4925 876.0 669.8
19 0.00 1.20 0.00 0.66 -11.03 273.04 -21.16 123.48 0.4267 772.0 660.9
20 0.00 1.63 0.00 0.90 -10.91 272.62 -21.58 122.75 0.4312 746.0 435.9
21 1.46 3.27 0.80 1.79 -9.98 272.11 -22.09 120.27 0.4307 -1043.8 -770.0
22 0.00 1.72 0.00 0.94 -9.55 272.08 -22.13 119.36 0.4280 -1061.0 -865.1
23 0.00 4.73 0.00 2.59 -9.65 271.84 -22.36 119.31 0.4319 -695.0 -754.5
24 0.00 1.20 0.00 0.66 -9.89 271.82 -22.38 119.79 0.4340 -788.0 -603.3
25 13.50 35.42 7.39 19.41 -8.77 271.67 -22.53 117.31 0.4280 455.2 -195.5
26 0.00 1.72 0.00 0.98 -15.53 271.05 -23.15 129.24 0.4911 791.0 592.7
27 1.29 -25.00 0.71 -25.00 -8.50 271.46 -22.74 116.53 0.4291 1026.5 999999
28 1.03 45.83 0.57 25.32 -9.51 271.20 -23.00 118.35 0.4398 -811.1 -137.9
29 3.61 -28.00 1.99 -28.00 -9.75 271.15 -23.05 118.79 0.4422 -998.9 999999
30 0.00 2.32 0.00 1.28 -8.75 271.15 -23.05 116.74 0.4351 847.0 684.6
31 0.00 1.20 0.00 0.67 -10.48 270.86 -23.34 119.95 0.4515 780.0 619.2
32 0.00 2.32 0.00 1.28 -9.24 270.60 -23.61 117.22 0.4463 -15.0 36.2
33 0.00 0.86 0.00 0.48 -10.95 270.26 -23.94 120.24 0.4631 864.0 742.6
34 0.00 2.49 0.00 1.39 -10.04 270.24 -23.96 118.45 0.4568 651.0 652.0
35 0.00 1.55 0.00 0.87 -11.78 270.02 -24.18 121.55 0.4725 717.0 542.9
36 0.00 0.77 0.00 0.43 -9.86 270.15 -24.05 118.02 0.4567 847.0 722.9
37 0.00 1.38 0.00 0.76 -8.98 270.22 -23.98 116.32 0.4498 789.0 642.4
38 0.00 1.29 0.00 0.73 -13.67 269.66 -24.54 124.54 0.4920 915.0 798.3
39 0.00 1.12 0.00 0.63 -11.73 269.69 -24.51 121.12 0.4764 683.0 515.1
40 0.00 1.03 0.00 0.59 -13.61 269.33 -24.87 124.10 0.4957 781.0 628.4
41 0.00 0.86 0.00 0.49 -11.82 269.42 -24.79 121.02 0.4808 555.0 415.0
42 0.00 1.12 0.00 0.64 -13.15 269.07 -25.13 123.05 0.4953 755.0 580.4
43 0.00 0.77 0.00 0.45 -16.43 268.25 -25.96 127.61 0.5320 805.0 598.0
44 0.00 1.20 0.00 0.67 -8.40 268.77 -25.43 113.90 0.4665 788.0 645.4
45 0.00 2.41 0.00 1.48 -21.89 266.93 -27.27 134.06 0.5939 797.0 400.6
46 0.00 1.55 0.00 0.87 -10.56 268.57 -25.64 117.88 0.4831 804.0 649.6
47 0.00 0.60 0.00 0.34 -8.50 268.54 -25.67 113.89 0.4705 731.0 665.6
48 0.00 1.98 0.00 1.19 -19.37 267.07 -27.13 130.77 0.5703 576.0 542.0
49 0.00 1.29 0.00 0.79 -21.58 266.31 -27.89 133.04 0.5975 689.0 563.1
50 0.00 1.03 0.00 0.61 -17.06 266.97 -27.23 127.30 0.5521 800.0 704.4
51 0.00 2.41 0.00 1.42 -15.92 267.15 -27.06 125.72 0.5409 623.0 512.8
52 0.00 0.86 0.00 0.51 -16.75 266.78 -27.42 126.64 0.5518 708.0 625.2
53 0.00 1.03 0.00 0.60 -14.56 266.99 -27.21 123.40 0.5322 736.0 616.8
54 0.00 2.92 0.00 1.75 -17.98 266.43 -27.77 128.16 0.5658 566.0 526.5
55 0.00 1.03 0.00 0.61 -17.07 266.51 -27.69 126.88 0.5574 744.0 556.3
56 0.00 1.03 0.00 0.59 -8.70 267.25 -26.95 113.29 0.4898 768.0 590.1
57 0.00 1.03 0.00 0.59 -8.77 267.14 -27.06 113.33 0.4917 739.0 644.1
58 1.03 2.67 0.59 1.52 -9.38 267.06 -27.14 114.41 0.4963 966.8 800.7
59 0.00 0.95 0.00 0.54 -9.68 267.03 -27.17 114.95 0.4985 640.0 531.1
60 0.00 1.20 0.00 0.69 -10.20 266.88 -27.32 115.79 0.5037 640.0 505.2
61 0.00 1.20 0.00 0.69 -9.56 266.87 -27.33 114.61 0.5000 697.0 540.6
62 0.00 1.03 0.00 0.60 -12.99 266.40 -27.80 120.28 0.5283 612.0 521.2
63 0.00 1.46 0.00 0.83 -7.39 266.74 -27.46 110.40 0.4900 776.0 715.0
64 0.00 1.55 0.00 0.88 -7.54 266.73 -27.47 110.68 0.4909 786.0 529.3
65 0.00 0.69 0.00 0.42 -17.72 265.45 -28.75 126.86 0.5749 838.0 721.0
66 0.00 1.98 0.00 1.20 -18.08 265.17 -29.03 127.13 0.5808 650.0 522.0
67 0.00 1.38 0.00 0.84 -17.83 265.04 -29.16 126.65 0.5804 640.0 537.1
68 0.00 0.77 0.00 0.49 -21.34 264.21 -29.99 130.78 0.6171 504.0 449.9
69 0.00 0.86 0.00 0.54 -20.05 264.02 -30.18 128.88 0.6090 593.0 450.1
70 0.00 0.60 0.00 0.40 -24.54 262.34 -31.86 133.23 0.6614 535.0 387.4
71 0.00 1.29 0.00 0.80 -18.78 263.66 -30.54 126.82 0.6032 781.0 651.2
72 0.00 0.95 0.00 0.59 -18.65 263.69 -30.51 126.66 0.6019 630.0 528.7
73 0.00 0.86 0.00 0.55 -20.98 262.81 -31.39 129.11 0.6290 660.0 575.6
74 0.00 0.95 0.00 0.55 -7.37 264.83 -29.37 109.16 0.5170 795.0 693.9
75 0.00 0.43 0.00 0.27 -20.72 262.84 -31.36 128.79 0.6268 682.0 620.0
76 0.00 0.52 0.00 0.33 -20.73 262.61 -31.59 128.61 0.6293 523.0 462.0
77 0.00 0.86 0.00 0.55 -20.99 262.47 -31.73 128.84 0.6327 418.0 377.7
78 0.00 1.03 0.00 0.59 -3.03 264.76 -29.45 100.83 0.5019 727.0 625.2
79 2.32 56.23 1.41 34.22 -14.70 263.39 -30.81 120.58 0.5777 1008.4 461.6
80 0.00 0.60 0.00 0.38 -20.42 262.16 -32.04 127.83 0.6318 470.0 399.1
81 0.00 0.69 0.00 0.40 -7.39 264.00 -30.20 108.72 0.5288 706.0 633.1
82 16.08 -79.00 9.78 -79.00 -14.68 262.93 -31.27 120.20 0.5832 1091.7 999999
83 0.00 1.63 0.00 0.96 -7.16 263.36 -30.84 107.96 0.5368 779.0 612.3
84 0.00 1.03 0.00 0.61 -9.56 263.04 -31.16 111.96 0.5524 755.0 619.4
85 0.00 0.95 0.00 0.61 -20.48 261.13 -33.07 127.10 0.6432 618.0 565.5
86 0.00 2.24 0.00 1.31 -6.69 263.19 -31.01 107.01 0.5373 774.0 647.3
87 0.00 1.29 0.00 0.77 -10.05 262.63 -31.57 112.55 0.5603 541.0 477.1
88 0.00 1.20 0.00 0.71 -6.93 262.89 -31.31 107.30 0.5425 690.0 574.7
89 0.00 0.69 0.00 0.42 -13.40 262.09 -32.11 117.61 0.5858 793.0 610.0
90 0.00 2.49 0.00 1.48 -9.11 262.59 -31.61 110.94 0.5563 679.0 533.1
91 0.00 1.98 0.00 1.33 -23.25 259.57 -34.64 129.48 0.6789 548.0 500.3
92 0.00 2.15 0.00 1.44 -22.99 259.57 -34.64 129.15 0.6770 643.0 481.7
93 0.00 0.77 0.00 0.46 -7.31 262.33 -31.87 107.68 0.5518 648.0 540.9
94 0.00 1.89 0.00 1.15 -12.61 261.70 -32.50 116.11 0.5862 217.0 260.6
95 0.00 1.29 0.00 0.84 -20.63 260.06 -34.14 126.50 0.6557 499.0 380.4
96 0.00 1.12 0.00 0.69 -13.14 261.33 -32.87 116.70 0.5939 571.0 473.6
97 0.00 0.77 0.00 0.48 -13.40 261.03 -33.17 116.90 0.5990 581.0 484.1
98 0.00 0.69 0.00 0.41 -7.70 261.31 -32.90 107.83 0.5676 334.0 343.4
99 0.00 0.77 0.00 0.47 -11.16 260.92 -33.28 113.33 0.5885 639.0 462.6
100 0.00 0.95 0.00 0.63 -20.34 259.02 -35.18 125.37 0.6648 628.0 500.3
101 0.00 0.86 0.00 0.53 -11.18 260.23 -33.97 112.95 0.5976 633.0 470.1
102 0.00 1.20 0.00 0.74 -11.40 260.09 -34.11 113.21 0.6004 718.0 556.8
103 0.00 2.06 0.00 1.29 -12.97 259.63 -34.57 115.37 0.6142 662.0 555.3
104 0.00 2.67 0.00 1.66 -11.90 259.72 -34.48 113.78 0.6076 697.0 610.6
105 0.00 0.60 0.00 0.38 -13.16 259.53 -34.67 115.59 0.6165 643.0 583.0
106 0.00 1.03 0.00 0.66 -15.53 258.99 -35.22 118.74 0.6360 775.0 670.2
107 0.00 0.86 0.00 0.54 -12.09 259.36 -34.84 113.87 0.6131 649.0 488.3
108 0.00 0.95 0.00 0.58 -9.34 259.55 -34.65 109.67 0.5981 387.0 351.9
109 0.00 2.06 0.00 1.25 -4.52 259.89 -34.31 101.83 0.5764 702.0 527.5
110 0.00 1.46 0.00 1.00 -21.14 256.82 -37.38 124.93 0.6929 636.0 552.4
111 0.00 0.77 0.00 0.54 -21.49 256.03 -38.17 124.86 0.7032 597.0 493.4
112 0.00 1.81 0.00 1.14 -10.68 258.23 -35.97 111.11 0.6210 667.0 559.7
113 0.00 0.86 0.00 0.60 -21.60 255.67 -38.53 124.77 0.7075 477.0 438.1
114 0.00 0.95 0.00 0.62 -15.61 257.21 -36.99 117.77 0.6573 717.0 643.3
115 0.00 0.86 0.00 0.60 -21.27 255.73 -38.47 124.40 0.7049 265.0 294.5
116 0.00 1.81 0.00 1.14 -10.39 257.97 -36.23 110.52 0.6230 603.0 441.3
117 0.00 0.95 0.00 0.62 -15.65 256.97 -37.23 117.69 0.6603 565.0 453.2
118 0.00 0.86 0.00 0.58 -17.05 256.22 -37.98 119.18 0.6762 192.0 222.0
119 0.00 0.34 0.00 0.23 -15.89 255.15 -39.05 117.01 0.6825 547.0 461.8
120 0.00 0.69 0.00 0.44 -9.74 256.13 -38.07 108.70 0.6440 -687.0 -553.6
121 0.00 1.29 0.00 0.85 -10.53 255.28 -38.92 109.49 0.6576 442.0 353.5
122 0.00 0.60 0.00 0.41 -15.04 254.39 -39.81 115.45 0.6872 490.0 373.7
123 0.00 1.12 0.00 0.77 -15.55 254.07 -40.13 115.98 0.6931 617.0 527.2
124 0.00 1.03 0.00 0.70 -14.83 254.15 -40.05 115.05 0.6889 419.0 373.4
125 0.00 0.95 0.00 0.66 -16.79 253.35 -40.85 117.27 0.7069 401.0 372.8
126 1.81 451.67 1.22 312.29 -12.38 253.58 -40.62 111.40 0.6854 1123.5 288.8
127 0.00 1.03 0.00 0.78 -21.22 250.36 -43.84 121.35 0.7584 -276.0 -358.2
128 67.67 -126.00 46.75 -126.00 -12.54 252.41 -41.79 111.12 0.6997 1115.3 999999
129 0.00 1.55 0.00 1.12 -16.61 251.23 -42.97 116.00 0.7292 642.0 478.7
130 0.60 1.46 0.41 1.00 -9.79 252.54 -41.66 107.35 0.6886 -692.1 -611.3
131 1.46 3.10 0.99 2.09 -7.37 252.51 -41.69 103.90 0.6819 -848.8 -737.9
132 2.06 -126.00 1.45 -126.00 -12.29 251.48 -42.73 110.41 0.7097 575.1 999999
133 1.72 2.92 1.19 2.02 -9.76 251.65 -42.55 106.99 0.6992 -533.9 -371.2
134 0.00 2.92 0.00 2.04 -10.53 251.23 -42.97 107.91 0.7066 781.0 581.2
135 0.00 2.06 0.00 1.46 -11.22 250.69 -43.51 108.65 0.7151 710.0 556.2
136 0.00 2.84 0.00 2.00 -10.31 250.48 -43.72 107.35 0.7148 119.0 53.2
137 3.10 6.62 2.20 4.71 -10.66 250.16 -44.04 107.71 0.7195 446.1 84.4
138 0.69 2.58 0.50 1.86 -11.92 249.66 -44.54 109.23 0.7292 393.0 205.5
139 0.00 1.29 0.00 0.93 -11.50 249.40 -44.80 108.58 0.7308 -324.0 -339.2
140 0.00 1.98 0.00 1.44 -11.94 249.05 -45.15 109.04 0.7361 -677.0 -564.1
141 1.46 17.54 1.06 12.69 -11.43 248.95 -45.25 108.32 0.7357 -829.8 -506.7
142 0.00 0.86 0.00 0.62 -9.63 249.12 -45.08 105.98 0.7286 -616.0 -490.0
143 0.00 0.86 0.00 0.65 -13.82 247.99 -46.21 111.10 0.7536 418.0 334.3
144 0.00 0.77 0.00 0.57 -11.77 247.96 -46.24 108.44 0.7477 -536.0 -438.0
145 0.77 4.73 0.63 3.83 -15.43 244.63 -49.57 111.93 0.7933 -446.4 -486.4
146 0.00 1.46 0.00 1.08 -4.86 246.77 -47.44 99.02 0.7454 -701.0 -621.3
147 0.00 2.32 0.00 1.96 -18.17 243.58 -50.62 114.84 0.8115 -109.0 -152.7
148 4.56 6.62 3.63 5.28 -13.66 244.84 -49.36 109.82 0.7861 486.9 249.3
149 0.00 1.55 0.00 1.25 -14.50 244.59 -49.61 110.78 0.7910 -495.0 -499.7
150 0.00 1.38 0.00 1.17 -18.25 243.20 -51.00 114.80 0.8153 -207.0 -192.1
151 0.00 8.00 0.00 6.42 -13.12 244.38 -49.82 109.02 0.7893 226.0 35.0
152 0.00 0.86 0.00 0.69 -11.68 244.34 -49.86 107.22 0.7861 342.0 286.6
153 0.00 0.86 0.00 0.69 -11.88 243.81 -50.39 107.33 0.7920 225.0 147.4
154 0.00 1.38 0.00 1.17 -15.48 242.41 -51.79 111.28 0.8148 -374.0 -464.2
155 9.63 1314.94 8.07 1139.82 -14.29 242.72 -51.48 109.95 0.8088 -1255.9 -196.9
156 0.00 2.06 0.00 1.67 -11.47 243.53 -50.67 106.74 0.7939 668.0 623.2
157 109.20 -155.00 95.27 -155.00 -16.85 241.69 -52.51 112.67 0.8251 -989.4 999999
158 32.59 -155.00 27.62 -155.00 -14.92 242.41 -51.79 110.61 0.8134 -905.3 999999
159 0.26 -155.00 0.22 -155.00 -16.29 241.81 -52.39 112.04 0.8225 -783.3 999999
160 0.00 1.20 0.00 0.98 -11.66 243.29 -50.91 106.91 0.7968 535.0 421.3
161 1.12 -155.00 0.96 -155.00 -15.22 242.01 -52.19 110.84 0.8180 -540.9 999999
162 0.00 0.77 0.00 0.63 -11.48 243.09 -51.11 106.64 0.7983 622.0 581.2
163 22.44 -155.00 18.95 -155.00 -13.94 242.29 -51.91 109.39 0.8121 -999.4 999999
164 2.15 -155.00 1.80 -155.00 -13.47 242.44 -51.76 108.87 0.8095 -1207.0 999999
165 0.60 1.46 0.49 1.20 -11.33 242.99 -51.21 106.43 0.7991 528.6 451.0
166 0.00 14.96 0.00 12.38 -12.11 242.73 -51.47 107.31 0.8034 -469.0 -432.3
167 0.00 1.03 0.00 0.85 -11.71 242.79 -51.41 106.84 0.8019 454.0 424.8
168 6.88 -155.00 5.87 -155.00 -14.42 241.93 -52.27 109.86 0.8167 -562.5 999999
169 2.75 -155.00 2.41 -155.00 -16.15 241.25 -52.95 111.71 0.8273 -496.8 999999
170 2.84 -155.00 2.45 -155.00 -14.80 241.55 -52.65 110.21 0.8212 -330.2 999999
171 2.06 3.27 1.71 2.70 -11.44 242.57 -51.63 106.45 0.8035 403.3 221.6
172 0.00 2.06 0.00 1.72 -11.78 242.43 -51.77 106.83 0.8057 296.0 217.8
173 1.29 -155.00 1.13 -155.00 -15.75 241.04 -53.16 111.18 0.8282 -441.8 999999
174 32.33 -155.00 27.86 -155.00 -13.94 241.43 -52.77 109.15 0.8202 -502.6 999999
175 0.00 0.26 0.00 0.24 -18.22 239.68 -54.52 113.63 0.8464 121.0 177.0
176 0.00 0.95 0.00 0.84 -15.65 240.46 -53.74 110.89 0.8333 -469.0 -419.6
177 1.20 -155.00 1.09 -155.00 -15.83 239.97 -54.23 110.96 0.8381 -320.5 999999
178 2.75 -155.00 2.48 -155.00 -15.67 239.98 -54.22 110.78 0.8377 -188.1 999999
179 1.12 -155.00 1.01 -155.00 -15.40 239.76 -54.44 110.41 0.8389 -311.8 999999
180 10.40 -155.00 9.31 -155.00 -14.52 239.99 -54.21 109.45 0.8349 1064.9 999999
181 9.03 -155.00 8.10 -155.00 -14.19 239.79 -54.41 109.00 0.8360 788.5 999999
182 0.00 2.41 0.00 2.09 -11.52 240.59 -53.61 106.05 0.8230 615.0 489.8
183 0.00 4.82 0.00 4.27 -12.92 239.96 -54.24 107.56 0.8317 414.0 383.8
184 0.00 1.20 0.00 1.10 -14.68 239.13 -55.07 109.40 0.8430 407.0 416.5
185 8.77 15.13 7.99 13.78 -13.78 239.08 -55.12 108.35 0.8415 638.4 321.4
186 0.00 2.15 0.00 1.98 -14.51 238.71 -55.49 109.10 0.8464 397.0 249.1
187 0.00 1.72 0.00 1.61 -15.15 238.29 -55.91 109.72 0.8513 677.0 592.2
188 0.00 2.58 0.00 2.39 -13.84 238.41 -55.79 108.25 0.8476 290.0 127.9
189 0.00 0.86 0.00 0.81 -14.88 237.90 -56.30 109.32 0.8541 379.0 340.5
190 0.00 3.61 0.00 3.37 -13.42 238.07 -56.13 107.69 0.8498 -533.0 -473.4
191 0.00 5.93 0.00 5.69 -13.95 237.20 -57.00 108.09 0.8583 -286.0 -366.6
192 0.00 0.95 0.00 0.91 -13.71 237.18 -57.02 107.80 0.8580 -584.0 -525.5
193 0.00 0.95 0.00 0.92 -13.76 236.71 -57.49 107.75 0.8621 -451.0 -414.1
194 0.00 0.52 0.00 0.48 -10.05 237.54 -56.66 103.66 0.8487 -353.0 -303.7


  • Proj. U -  Projected umbra area in millionths of solar disc, negative values indicate
    that the umbra consists of fragmented regions which cannot be separated without losing umbral area.
    In this way several spots (intensity minima in the umbra) have a common umbra, e.g. -2 means that
    the given spot shares an umbra with spot No.2, and the common U value is indicated at spot No.2.
  • Proj. WS -  Projected whole spot area in millionths of solar disc, negative values indicate
    that several umbras have a common penumbra, e.g. -7 means that the given umbra shares
    a penumbra with umbra No.7, and the WS value is indicated at No.7.
  • Corr. U -  Corrected umbra area in millionths of solar hemisphere, for negative values see above
  • Corr. WS -  Corrected whole spot area in millionths of solar hemisphere, for negative values see above
  • B -  Heliographic latitude B; positive: North, negative: South
  • L -  Heliographic longitude L
  • LCM -  Longitudinal distance from the Sun's central meridian
  • Pos. angle -  Position angle
  • r -  Distance from the centre of Sun's disc in terms of Sun's radius
  • MU -  Mean magnetic field within the umbra contour averaged the pixel values with sign.
  • MP -  Mean magnetic field within the penumbra contour averaged the pixel values with sign.