---
title: "Stat 123 Homework 3"
author: "Your Name Here"
date: "Enter Date"
output: word_document
---
Make a list containing three elements named "y2011", "y2012", and "y2013"
containing three data.frames of weather information for years 2011, 2012, and
2013 in Provo. You will need to read in the data found in the instructions.

```{r}

```

Using the list you created, how many days in 2011 had a minimum temperature below 20 degrees?  Watch out, there may be missing values!
```{r}

```


Using the list you created, how many days in 2012 had a minimum temperature below 20 degrees?
```{r}

```


Using the list you created, how many days in 2013 had a minimum temperature below 20 degrees?
```{r}

```