diff --git a/.gitignore b/.gitignore
index 780a7f6..62bb4fc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
 !*.gitignore
 !*.py
 !.gitkeep
+!lab3/data.txt
 !lab4/*
 !lab5/report/report.tex
 !lab5/README.md
diff --git a/lab3/data.txt b/lab3/data.txt
new file mode 100644
index 0000000..0435021
--- /dev/null
+++ b/lab3/data.txt
@@ -0,0 +1,89 @@
+1 11511.3889 42106.3889
+2 11503.0556 42855.2778
+3 11438.3333 42057.2222
+4 11438.3333 42057.2222
+5 11438.3333 42057.2222
+6 11785.2778 42884.4444
+7 11785.2778 42884.4444
+8 11785.2778 42884.4444
+9 11785.2778 42884.4444
+10 12363.3333 43189.1667
+11 11846.9444 42660.5556
+12 11503.0556 42855.2778
+13 11963.0556 43290.5556
+14 11963.0556 43290.5556
+15 12300.0000 42433.3333
+16 11973.0556 43026.1111
+17 11973.0556 43026.1111
+18 11461.1111 43252.7778
+19 11461.1111 43252.7778
+20 11461.1111 43252.7778
+21 11461.1111 43252.7778
+22 11600.0000 43150.0000
+23 12386.6667 43334.7222
+24 12386.6667 43334.7222
+25 11595.0000 43148.0556
+26 11595.0000 43148.0556
+27 11569.4444 43136.6667
+28 11310.2778 42929.4444
+29 11310.2778 42929.4444
+30 11310.2778 42929.4444
+31 11963.0556 43290.5556
+32 11416.6667 42983.3333
+33 11416.6667 42983.3333
+34 11595.0000 43148.0556
+35 12149.4444 42477.5000
+36 11595.0000 43148.0556
+37 11595.0000 43148.0556
+38 11108.6111 42373.8889
+39 11108.6111 42373.8889
+40 11108.6111 42373.8889
+41 11108.6111 42373.8889
+42 11183.3333 42933.3333
+43 12372.7778 42711.3889
+44 11583.3333 43150.0000
+45 11583.3333 43150.0000
+46 11583.3333 43150.0000
+47 11583.3333 43150.0000
+48 11583.3333 43150.0000
+49 11822.7778 42673.6111
+50 11822.7778 42673.6111
+51 12058.3333 42195.5556
+52 11003.6111 42102.5000
+53 11003.6111 42102.5000
+54 11003.6111 42102.5000
+55 11522.2222 42841.9444
+56 12386.6667 43334.7222
+57 12386.6667 43334.7222
+58 12386.6667 43334.7222
+59 11569.4444 43136.6667
+60 11569.4444 43136.6667
+61 11569.4444 43136.6667
+62 11155.8333 42712.5000
+63 11155.8333 42712.5000
+64 11155.8333 42712.5000
+65 11155.8333 42712.5000
+66 11133.3333 42885.8333
+67 11133.3333 42885.8333
+68 11133.3333 42885.8333
+69 11133.3333 42885.8333
+70 11133.3333 42885.8333
+71 11003.6111 42102.5000
+72 11770.2778 42651.9444
+73 11133.3333 42885.8333
+74 11690.5556 42686.6667
+75 11690.5556 42686.6667
+76 11751.1111 42814.4444
+77 12645.0000 42973.3333
+78 12421.6667 42895.5556
+79 12421.6667 42895.5556
+80 11485.5556 43187.2222
+81 11423.8889 43000.2778
+82 11423.8889 43000.2778
+83 11715.8333 41836.1111
+84 11297.5000 42853.3333
+85 11297.5000 42853.3333
+86 11583.3333 43150.0000
+87 11569.4444 43136.6667
+88 12286.9444 43355.5556
+89 12355.8333 43156.3889
\ No newline at end of file