A grocery store receives a shipment of 16 pumpkins. Their weights (in kilograms) are given in the following table. Construct a frequency table for these weights using 4 classes.

1.2

1.8

1.3

1.9

1.3

2

1.4

2.1

1.4

2.3

1.5

2.5

1.6

2.7

1.8

3.2