Dataset:  tealatin.dat

Source: C.J. Harrison and S.S. Bose(1942). "Studies of the Variations in the
Value of tea and Its Chemical Constituents," Sankhya: The Indian Journal of
Statistics, Vol. 6, #2, pp. 151-166

Description: Latin Square Design to compare aspects of 8 varieties of tea,
prepared on 8 dates, with 8 orderings of the preparations. 8 Treatments
represent 4 tea seeds or jats (BJ, KK, PG, CH) crossed with whether the
field had been pruned the previous December (Pruned) or not (unpruned).
Responses Measured:
Mean Valuation among 6 judges (pence)
Percent Tannin
Percent Soluble solid
Percent Caffeine
Percent Potash
Percent Phosphoric Acid

Variables/Columns
Trt   8 /* 1=BJ/P, 2=BJ/U, 3=KK/P, 4=KK/U, 5=PG/P, 6=PG/U, 7=CH/P, 8=CH/U  */
jat  16   /* 1=BJ, 2=KK, 3=PG, 4=CH   */
Pruning status   24  /* 1=Pruned,  2=unpruned  */
Preparation Day   32
Order of Preparation on the day   40
Mean Valuation among 6 judges (pence)  42-48
Percent Tannin   50-56
Percent Soluble solid  58-64
Percent Caffeine    66-72
Percent Potash     74-80
Percent Phosphoric Acid   82-88