Data Set 72-031C-10B

360 files, 322 megabytes
Downloaded 22/09/04 and 3/01/05




Not very informative, is it?

The only thing these file names tell you is the data set they came from and their location on the tapes. Twenty file names give even less information: DS004410.F01 to DS004410.F20 are a sample set that the NSSDC initially sent me when I made the data request. (A very sensible move on their part—there would have been little point in sending me the whole set if I couldn't do anything with it.)

If we want to view these images, we need to look elsewhere for a clue. And we can find that clue right in the next column: in the sizes of the files.

The images were described as uncompressed greyscale images of 1024 pixels square. That means they have to be at least 1 megabyte long. Go down the list (which is sorted by size) and you won't find any files close to that size. Instead, you will find a number (134 to be exact) that are exactly 1,574,489 bytes long. Time to do some math.

1,574,489 ÷ 1,024 = 1,537 with a remainder of 601.

So each line contains 1,537 bytes. If the images are square (and Dr. Carruthers assured me they are), then those bytes represent 1,024 pixels, so....

1,537 ÷ 1,024 = 1.5 with 1 byte left over—most likely a carriage return.

Therefore, each pixel is represented by 1.5 bytes, or 3 bytes per 2 pixels, or a bit depth of 12.

What about those 601 leftover bytes? If you open one of these files in Notepad, you will see a long string of numbers set off by several rows of ||||||'s. This is the file information header, and it is exactly 601 bytes long (I counted).

Notice also that 16 files contain 1,573,888 bytes, which is exactly 601 bytes shorter than 1,574,489. Viewing them in Notepad reveals that their headers are missing.

Similar calculations can also reveal the sizes of the smaller images. For instance, some files are 394,329 bytes long, and since....

512 x 1.5 x 512 + 512 + 601 = 394,329

...then these files must be 512 pixels on a side and also have a 12-bit depth.

However, I only concentrated on the large files because I figured they would be the most interesting. If you scroll down the list, you will find the underlined names that link to the images I posted.

Another thing I did was change the files' names to the more familiar 8.3 format. So, after copying the originals safely on to a CD, I used a batch renamer to move the tape and file numbers to the left of the dot, and added an extension (either RAW, BMP, or JPG, depending on which I was converting) so that, for example, 72‑031C‑10B_TAPE3.FILE31;1 became 3F031.JPG.

Back
Name Size

72‑031C‑10B_TAPE1.FILE36;13,066
DS004410.F013,066
72‑031C‑10B_TAPE1.FILE40;15,151
DS004410.F055,151
72‑031C‑10B_TAPE1.FILE37;15,606
DS004410.F025,606
72‑031C‑10B_TAPE1.FILE41;16,421
DS004410.F066,421
72‑031C‑10B_TAPE1.FILE38;17,861
DS004410.F037,861
72‑031C‑10B_TAPE1.FILE44;117,716
DS004410.F0917,716
72‑031C‑10B_TAPE1.FILE26;125,305
72‑031C‑10B_TAPE1.FILE27;125,305
72‑031C‑10B_TAPE1.FILE28;125,305
72‑031C‑10B_TAPE1.FILE30;125,305
72‑031C‑10B_TAPE1.FILE31;125,305
72‑031C‑10B_TAPE1.FILE52;125,305
72‑031C‑10B_TAPE1.FILE53;125,305
72‑031C‑10B_TAPE1.FILE54;125,305
72‑031C‑10B_TAPE1.FILE56;125,305
72‑031C‑10B_TAPE1.FILE57;125,305
72‑031C‑10B_TAPE1.FILE58;125,305
72‑031C‑10B_TAPE1.FILE59;125,305
72‑031C‑10B_TAPE1.FILE60;125,305
72‑031C‑10B_TAPE1.FILE61;125,305
72‑031C‑10B_TAPE1.FILE62;125,305
72‑031C‑10B_TAPE1.FILE63;125,305
72‑031C‑10B_TAPE1.FILE64;125,305
72‑031C‑10B_TAPE1.FILE100;128,276
72‑031C‑10B_TAPE1.FILE101;128,276
72‑031C‑10B_TAPE1.FILE102;128,276
72‑031C‑10B_TAPE1.FILE103;128,276
72‑031C‑10B_TAPE1.FILE104;128,276
72‑031C‑10B_TAPE1.FILE105;128,276
72‑031C‑10B_TAPE1.FILE106;128,276
72‑031C‑10B_TAPE1.FILE107;128,276
72‑031C‑10B_TAPE1.FILE108;128,276
72‑031C‑10B_TAPE1.FILE109;128,276
72‑031C‑10B_TAPE1.FILE110;128,276
72‑031C‑10B_TAPE1.FILE111;128,276
72‑031C‑10B_TAPE1.FILE112;128,276
72‑031C‑10B_TAPE1.FILE65;128,276
72‑031C‑10B_TAPE1.FILE66;128,276
72‑031C‑10B_TAPE1.FILE67;128,276
72‑031C‑10B_TAPE1.FILE68;128,276
72‑031C‑10B_TAPE1.FILE69;128,276
72‑031C‑10B_TAPE1.FILE70;128,276
72‑031C‑10B_TAPE1.FILE71;128,276
72‑031C‑10B_TAPE1.FILE72;128,276
72‑031C‑10B_TAPE1.FILE73;128,276
72‑031C‑10B_TAPE1.FILE74;128,276
72‑031C‑10B_TAPE1.FILE75;128,276
72‑031C‑10B_TAPE1.FILE76;128,276
72‑031C‑10B_TAPE1.FILE77;128,276
72‑031C‑10B_TAPE1.FILE78;128,276
72‑031C‑10B_TAPE1.FILE79;128,276
72‑031C‑10B_TAPE1.FILE80;128,276
72‑031C‑10B_TAPE1.FILE81;128,276
72‑031C‑10B_TAPE1.FILE82;128,276
72‑031C‑10B_TAPE1.FILE83;128,276
72‑031C‑10B_TAPE1.FILE84;128,276
72‑031C‑10B_TAPE1.FILE85;128,276
72‑031C‑10B_TAPE1.FILE86;128,276
72‑031C‑10B_TAPE1.FILE87;128,276
72‑031C‑10B_TAPE1.FILE88;128,276
72‑031C‑10B_TAPE1.FILE89;128,276
72‑031C‑10B_TAPE1.FILE90;128,276
72‑031C‑10B_TAPE1.FILE91;128,276
72‑031C‑10B_TAPE1.FILE92;128,276
72‑031C‑10B_TAPE1.FILE93;128,276
72‑031C‑10B_TAPE1.FILE94;128,276
72‑031C‑10B_TAPE1.FILE95;128,276
72‑031C‑10B_TAPE1.FILE96;128,276
72‑031C‑10B_TAPE1.FILE97;128,276
72‑031C‑10B_TAPE1.FILE98;128,276
72‑031C‑10B_TAPE1.FILE99;128,276
DS004410.F2045,991
72‑031C‑10B_TAPE1.FILE22;146,711
72‑031C‑10B_TAPE1.FILE23;146,711
72‑031C‑10B_TAPE1.FILE24;146,711
72‑031C‑10B_TAPE1.FILE25;146,711
72‑031C‑10B_TAPE1.FILE32;146,711
72‑031C‑10B_TAPE1.FILE33;146,711
72‑031C‑10B_TAPE1.FILE34;146,711
72‑031C‑10B_TAPE1.FILE35;146,711
DS004410.F1954,631
DS004410.F1765,431
DS004410.F1865,431
72‑031C‑10B_TAPE1.FILE21;199,007
72‑031C‑10B_TAPE1.FILE42;1103,821
72‑031C‑10B_TAPE1.FILE43;1103,821
DS004410.F07103,821
DS004410.F08103,821
72‑031C‑10B_TAPE4.FILE9;1183,504
72‑031C‑10B_TAPE5.FILE20;1232,328
72‑031C‑10B_TAPE1.FILE47;1284,885
72‑031C‑10B_TAPE1.FILE45;1285,666
72‑031C‑10B_TAPE1.FILE46;1285,666
72‑031C‑10B_TAPE1.FILE48;1285,666
72‑031C‑10B_TAPE1.FILE49;1285,666
72‑031C‑10B_TAPE1.FILE50;1285,666
DS004410.F10285,666
DS004410.F11285,666
DS004410.F12285,666
DS004410.F13285,666
DS004410.F14285,666
DS004410.F15285,666
72‑031C‑10B_TAPE3.FILE41;1393,560
72‑031C‑10B_TAPE5.FILE41;1393,560
72‑031C‑10B_TAPE5.FILE37;1393,728
72‑031C‑10B_TAPE3.FILE42;1394,329
72‑031C‑10B_TAPE3.FILE44;1394,329
72‑031C‑10B_TAPE3.FILE45;1394,329
72‑031C‑10B_TAPE4.FILE36;1394,329
72‑031C‑10B_TAPE4.FILE37;1394,329
72‑031C‑10B_TAPE4.FILE38;1394,329
72‑031C‑10B_TAPE4.FILE39;1394,329
72‑031C‑10B_TAPE4.FILE40;1394,329
72‑031C‑10B_TAPE4.FILE41;1394,329
72‑031C‑10B_TAPE4.FILE42;1394,329
72‑031C‑10B_TAPE4.FILE44;1394,329
72‑031C‑10B_TAPE4.FILE45;1394,329
72‑031C‑10B_TAPE4.FILE46;1394,329
72‑031C‑10B_TAPE4.FILE47;1394,329
72‑031C‑10B_TAPE4.FILE48;1394,329
72‑031C‑10B_TAPE5.FILE10;1394,329
72‑031C‑10B_TAPE5.FILE11;1394,329
72‑031C‑10B_TAPE5.FILE12;1394,329
72‑031C‑10B_TAPE5.FILE13;1394,329
72‑031C‑10B_TAPE5.FILE14;1394,329
72‑031C‑10B_TAPE5.FILE17;1394,329
72‑031C‑10B_TAPE5.FILE18;1394,329
72‑031C‑10B_TAPE5.FILE19;1394,329
72‑031C‑10B_TAPE5.FILE26;1394,329
72‑031C‑10B_TAPE5.FILE27;1394,329
72‑031C‑10B_TAPE5.FILE28;1394,329
72‑031C‑10B_TAPE5.FILE29;1394,329
72‑031C‑10B_TAPE5.FILE3;1394,329
72‑031C‑10B_TAPE5.FILE30;1394,329
72‑031C‑10B_TAPE5.FILE39;1394,329
72‑031C‑10B_TAPE5.FILE4;1394,329
72‑031C‑10B_TAPE5.FILE40;1394,329
72‑031C‑10B_TAPE5.FILE42;1394,329
72‑031C‑10B_TAPE5.FILE43;1394,329
72‑031C‑10B_TAPE5.FILE44;1394,329
72‑031C‑10B_TAPE5.FILE45;1394,329
72‑031C‑10B_TAPE5.FILE46;1394,329
72‑031C‑10B_TAPE5.FILE47;1394,329
72‑031C‑10B_TAPE5.FILE48;1394,329
72‑031C‑10B_TAPE5.FILE49;1394,329
72‑031C‑10B_TAPE5.FILE5;1394,329
72‑031C‑10B_TAPE5.FILE50;1394,329
72‑031C‑10B_TAPE5.FILE51;1394,329
72‑031C‑10B_TAPE5.FILE52;1394,329
72‑031C‑10B_TAPE5.FILE6;1394,329
72‑031C‑10B_TAPE5.FILE7;1394,329
72‑031C‑10B_TAPE5.FILE8;1394,329
72‑031C‑10B_TAPE5.FILE9;1394,329
72‑031C‑10B_TAPE6.FILE2;1394,329
72‑031C‑10B_TAPE6.FILE3;1394,329
72‑031C‑10B_TAPE6.FILE4;1394,329
72‑031C‑10B_TAPE6.FILE5;1394,329
72‑031C‑10B_TAPE5.FILE23;1406,999
72‑031C‑10B_TAPE5.FILE24;1423,804
72‑031C‑10B_TAPE1.FILE51;1455,963
DS004410.F16456,966
72‑031C‑10B_TAPE5.FILE22;1490,923
72‑031C‑10B_TAPE5.FILE21;1642,273
72‑031C‑10B_TAPE5.FILE58;1787,545
72‑031C‑10B_TAPE5.FILE59;1787,545
72‑031C‑10B_TAPE5.FILE60;1787,545
72‑031C‑10B_TAPE5.FILE61;1787,545
72‑031C‑10B_TAPE5.FILE62;1787,545
72‑031C‑10B_TAPE5.FILE63;1787,545
72‑031C‑10B_TAPE5.FILE64;1787,545
72‑031C‑10B_TAPE5.FILE65;1787,545
72‑031C‑10B_TAPE5.FILE66;1787,545
72‑031C‑10B_TAPE5.FILE67;1787,545
72‑031C‑10B_TAPE5.FILE68;1787,545
72‑031C‑10B_TAPE5.FILE69;1787,545
72‑031C‑10B_TAPE5.FILE70;1787,545
72‑031C‑10B_TAPE5.FILE56;11,450,928
72‑031C‑10B_TAPE5.FILE57;11,460,751
72‑031C‑10B_TAPE5.FILE55;11,549,897
72‑031C‑10B_TAPE3.FILE19;11,556,981
72‑031C‑10B_TAPE2.FILE1;11,563,129
72‑031C‑10B_TAPE1.FILE29;11,565,267
72‑031C‑10B_TAPE1.FILE113;11,566,203
72‑031C‑10B_TAPE3.FILE18;11,568,341
72‑031C‑10B_TAPE4.FILE20;11,569,878
72‑031C‑10B_TAPE4.FILE17;11,572,351
72‑031C‑10B_TAPE5.FILE1;11,572,351
72‑031C‑10B_TAPE1.FILE117;11,572,952
72‑031C‑10B_TAPE1.FILE137;11,572,952
72‑031C‑10B_TAPE2.FILE2;11,572,952
72‑031C‑10B_TAPE3.FILE21;11,572,952
72‑031C‑10B_TAPE3.FILE27;11,572,952
72‑031C‑10B_TAPE1.FILE122;11,573,888
72‑031C‑10B_TAPE1.FILE131;11,573,888
72‑031C‑10B_TAPE2.FILE10;11,573,888
72‑031C‑10B_TAPE2.FILE19;11,573,888
72‑031C‑10B_TAPE2.FILE28;11,573,888
72‑031C‑10B_TAPE2.FILE37;11,573,888
72‑031C‑10B_TAPE3.FILE1;11,573,888
72‑031C‑10B_TAPE3.FILE10;11,573,888
72‑031C‑10B_TAPE3.FILE28;11,573,888
72‑031C‑10B_TAPE3.FILE37;11,573,888
72‑031C‑10B_TAPE4.FILE1;11,573,888
72‑031C‑10B_TAPE4.FILE10;11,573,888
72‑031C‑10B_TAPE4.FILE25;11,573,888
72‑031C‑10B_TAPE4.FILE34;11,573,888
72‑031C‑10B_TAPE5.FILE25;11,573,888
72‑031C‑10B_TAPE6.FILE1;11,573,888
72‑031C‑10B_TAPE1.FILE114;11,574,489
72‑031C‑10B_TAPE1.FILE115;11,574,489
72‑031C‑10B_TAPE1.FILE116;11,574,489
72‑031C‑10B_TAPE1.FILE118;11,574,489
72‑031C‑10B_TAPE1.FILE119;11,574,489
72‑031C‑10B_TAPE1.FILE120;11,574,489
72‑031C‑10B_TAPE1.FILE121;11,574,489
72‑031C‑10B_TAPE1.FILE123;11,574,489
72‑031C‑10B_TAPE1.FILE124;11,574,489
72‑031C‑10B_TAPE1.FILE125;11,574,489
72‑031C‑10B_TAPE1.FILE126;11,574,489
72‑031C‑10B_TAPE1.FILE127;11,574,489
72‑031C‑10B_TAPE1.FILE128;11,574,489
72‑031C‑10B_TAPE1.FILE129;11,574,489
72‑031C‑10B_TAPE1.FILE130;11,574,489
72‑031C‑10B_TAPE1.FILE132;11,574,489
72‑031C‑10B_TAPE1.FILE133;11,574,489
72‑031C‑10B_TAPE1.FILE134;11,574,489
72‑031C‑10B_TAPE1.FILE135;11,574,489
72‑031C‑10B_TAPE1.FILE136;11,574,489
72‑031C‑10B_TAPE1.FILE138;11,574,489
72‑031C‑10B_TAPE1.FILE39;11,574,489
72‑031C‑10B_TAPE1.FILE55;11,574,489
72‑031C‑10B_TAPE2.FILE11;11,574,489
72‑031C‑10B_TAPE2.FILE12;11,574,489
72‑031C‑10B_TAPE2.FILE13;11,574,489
72‑031C‑10B_TAPE2.FILE14;11,574,489
72‑031C‑10B_TAPE2.FILE15;11,574,489
72‑031C‑10B_TAPE2.FILE16;11,574,489
72‑031C‑10B_TAPE2.FILE17;11,574,489
72‑031C‑10B_TAPE2.FILE18;11,574,489
72‑031C‑10B_TAPE2.FILE20;11,574,489
72‑031C‑10B_TAPE2.FILE21;11,574,489
72‑031C‑10B_TAPE2.FILE22;11,574,489
72‑031C‑10B_TAPE2.FILE23;11,574,489
72‑031C‑10B_TAPE2.FILE25;11,574,489
72‑031C‑10B_TAPE2.FILE26;11,574,489
72‑031C‑10B_TAPE2.FILE27;11,574,489
72‑031C‑10B_TAPE2.FILE29;11,574,489
72‑031C‑10B_TAPE2.FILE3;11,574,489
72‑031C‑10B_TAPE2.FILE30;11,574,489
72‑031C‑10B_TAPE2.FILE31;11,574,489
72‑031C‑10B_TAPE2.FILE32;11,574,489
72‑031C‑10B_TAPE2.FILE33;11,574,489
72‑031C‑10B_TAPE2.FILE34;11,574,489
72‑031C‑10B_TAPE2.FILE35;11,574,489
72‑031C‑10B_TAPE2.FILE36;11,574,489
72‑031C‑10B_TAPE2.FILE38;11,574,489
72‑031C‑10B_TAPE2.FILE39;11,574,489
72‑031C‑10B_TAPE2.FILE4;11,574,489
72‑031C‑10B_TAPE2.FILE40;11,574,489
72‑031C‑10B_TAPE2.FILE41;11,574,489
72‑031C‑10B_TAPE2.FILE42;11,574,489
72‑031C‑10B_TAPE2.FILE43;11,574,489
72‑031C‑10B_TAPE2.FILE44;11,574,489
72‑031C‑10B_TAPE2.FILE45;11,574,489
72‑031C‑10B_TAPE2.FILE5;11,574,489
72‑031C‑10B_TAPE2.FILE6;11,574,489
72‑031C‑10B_TAPE2.FILE7;11,574,489
72‑031C‑10B_TAPE2.FILE8;11,574,489
72‑031C‑10B_TAPE3.FILE11;11,574,489
72‑031C‑10B_TAPE3.FILE12;11,574,489
72‑031C‑10B_TAPE3.FILE13;11,574,489
72‑031C‑10B_TAPE3.FILE14;11,574,489
72‑031C‑10B_TAPE3.FILE15;11,574,489
72‑031C‑10B_TAPE3.FILE16;11,574,489
72‑031C‑10B_TAPE3.FILE17;11,574,489
72‑031C‑10B_TAPE3.FILE2;11,574,489
72‑031C‑10B_TAPE3.FILE20;11,574,489
72‑031C‑10B_TAPE3.FILE22;11,574,489
72‑031C‑10B_TAPE3.FILE23;11,574,489
72‑031C‑10B_TAPE3.FILE24;11,574,489
72‑031C‑10B_TAPE3.FILE25;11,574,489
72‑031C‑10B_TAPE3.FILE26;11,574,489
72‑031C‑10B_TAPE3.FILE29;11,574,489
72‑031C‑10B_TAPE3.FILE3;11,574,489
72‑031C‑10B_TAPE3.FILE30;11,574,489
72‑031C‑10B_TAPE3.FILE31;11,574,489
72‑031C‑10B_TAPE3.FILE32;11,574,489
72‑031C‑10B_TAPE3.FILE33;11,574,489
72‑031C‑10B_TAPE3.FILE34;11,574,489
72‑031C‑10B_TAPE3.FILE35;11,574,489
72‑031C‑10B_TAPE3.FILE36;11,574,489
72‑031C‑10B_TAPE3.FILE38;11,574,489
72‑031C‑10B_TAPE3.FILE39;11,574,489
72‑031C‑10B_TAPE3.FILE4;11,574,489
72‑031C‑10B_TAPE3.FILE40;11,574,489
72‑031C‑10B_TAPE3.FILE43;11,574,489
72‑031C‑10B_TAPE3.FILE46;11,574,489
72‑031C‑10B_TAPE3.FILE47;11,574,489
72‑031C‑10B_TAPE3.FILE5;11,574,489
72‑031C‑10B_TAPE3.FILE6;11,574,489
72‑031C‑10B_TAPE3.FILE7;11,574,489
72‑031C‑10B_TAPE3.FILE8;11,574,489
72‑031C‑10B_TAPE3.FILE9;11,574,489
72‑031C‑10B_TAPE4.FILE11;11,574,489
72‑031C‑10B_TAPE4.FILE12;11,574,489
72‑031C‑10B_TAPE4.FILE13;11,574,489
72‑031C‑10B_TAPE4.FILE14;11,574,489
72‑031C‑10B_TAPE4.FILE15;11,574,489
72‑031C‑10B_TAPE4.FILE16;11,574,489
72‑031C‑10B_TAPE4.FILE18;11,574,489
72‑031C‑10B_TAPE4.FILE19;11,574,489
72‑031C‑10B_TAPE4.FILE2;11,574,489
72‑031C‑10B_TAPE4.FILE21;11,574,489
72‑031C‑10B_TAPE4.FILE22;11,574,489
72‑031C‑10B_TAPE4.FILE23;11,574,489
72‑031C‑10B_TAPE4.FILE24;11,574,489
72‑031C‑10B_TAPE4.FILE26;11,574,489
72‑031C‑10B_TAPE4.FILE27;11,574,489
72‑031C‑10B_TAPE4.FILE28;11,574,489
72‑031C‑10B_TAPE4.FILE29;11,574,489
72‑031C‑10B_TAPE4.FILE3;11,574,489
72‑031C‑10B_TAPE4.FILE30;11,574,489
72‑031C‑10B_TAPE4.FILE31;11,574,489
72‑031C‑10B_TAPE4.FILE32;11,574,489
72‑031C‑10B_TAPE4.FILE33;11,574,489
72‑031C‑10B_TAPE4.FILE35;11,574,489
72‑031C‑10B_TAPE4.FILE4;11,574,489
72‑031C‑10B_TAPE4.FILE43;11,574,489
72‑031C‑10B_TAPE4.FILE5;11,574,489
72‑031C‑10B_TAPE4.FILE6;11,574,489
72‑031C‑10B_TAPE4.FILE7;11,574,489
72‑031C‑10B_TAPE4.FILE8;11,574,489
72‑031C‑10B_TAPE5.FILE15;11,574,489
72‑031C‑10B_TAPE5.FILE16;11,574,489
72‑031C‑10B_TAPE5.FILE2;11,574,489
72‑031C‑10B_TAPE5.FILE31;11,574,489
72‑031C‑10B_TAPE5.FILE32;11,574,489
72‑031C‑10B_TAPE5.FILE33;11,574,489
72‑031C‑10B_TAPE5.FILE34;11,574,489
72‑031C‑10B_TAPE5.FILE35;11,574,489
72‑031C‑10B_TAPE5.FILE36;11,574,489
72‑031C‑10B_TAPE5.FILE38;11,574,489
72‑031C‑10B_TAPE5.FILE53;11,574,489
72‑031C‑10B_TAPE5.FILE54;11,574,489
72‑031C‑10B_TAPE6.FILE10;11,574,489
72‑031C‑10B_TAPE6.FILE11;11,574,489
72‑031C‑10B_TAPE6.FILE12;11,574,489
72‑031C‑10B_TAPE6.FILE6;11,574,489
72‑031C‑10B_TAPE6.FILE7;11,574,489
72‑031C‑10B_TAPE6.FILE8;11,574,489
72‑031C‑10B_TAPE6.FILE9;11,574,489
DS004410.F041,574,489
72‑031C‑10B_TAPE2.FILE9;11,574,491
72‑031C‑10B_TAPE2.FILE24;11,575,478
Total: 321,561,980 bytes