Chemical	1	2	3	4
Observation 1	77.199	80.522	79.417	78.001
Observation 2	74.466	79.306	78.017	78.358
Observation 3	92.746	81.914	91.596	77.544
Observation 4	76.208	80.346	80.802	77.364
Observation 5	82.876	73.385	80.626	77.386