amount	response
0.25	6.55
0.25	7.98
0.25	6.54
0.25	6.37
0.25	7.96
1	29.7
1	30
1	30.1
1	29.5
1	29.1
5	211
5	204
5	212
5	213
5	205
20	929
20	905
20	922
20	928
20	919