Tile Range:  (SW) E 29°00'00" N 68°40'00"   to  (NE) 30°00'00" 69°00'00"
corresponds to Pixel Range: (NW) (50,50)  to  (SE) (4860,4424)

Each line of text corresponds to a contour line.

For each line, read start X pixel, Y pixel, height (meters), followed by contour type (at present, only constant height contours, code 16, are included. 

The digits that follow denote the contour's path.
0-7 move one pixel E (0), NE, N, NW, W, SW, S, SE(7).

A carriage return terminates the line.