# read.table('coffee.dat',header=T,row.names=NULL, skip=2)
# CAUTION: This is 'artificial data.' Do not draw any conclusions from it!
ID Coffee Stress  Heart  Stress2
1 23 14 6 0
2 35 34 9 47
3 38 58 41 0
4 48 50 31 5
5 52 86 63 166
6 56 73 44 77
7 61 82 69 24
8 62 87 80 50
9 64 74 63 55
10 71 80 72 107
11 74 87 83 115
12 76 92 58 91
13 87 128 113 190
14 97 115 88 132
15 100 123 92 102
16 104 117 92 158
17 107 148 144 84
18 124 146 103 172
19 141 175 145 155
20 154 197 162 229