Below is a table in which the first column is price, the second column is quantity. I need to choose the minimum price – 45.09, excluding low quantity offers. Which math functions from the numpy package should I use?

11.00   1
12.00   3
15.00   1
16.00   1
17.00   1
18.00   4
19.00   2
45.09   109
45.10   234
46.99   187
47.00   315
99.00   564