location heights
a 1.7
a 3
a 1.7
a 1.6
a 1.4
a 1.9
a 1.1
a 1.6
a 2
a 1.25
a 2
a 1.3
a 1.45
a 2.2
a 0.7
a 1.9
a 1.8
a 2
a 2.2
a 0.92
b 1.3
b 1.35
b 2.16
b 1.8
b 1.55
b 1.2
b 1
b 1.7
b 0.8
b 1.2
b 0.9
b 1.35
b 1.4
b 1
b 1.7
b 1.5
b 0.65
b 1.5
b 1.7
b 1.7
b 1.5
b 1.5
b 1.2
b 0.7
b 1.2
b 0.8