The daily maximum temperatures in Washington DC for April 2002 are given.

["The following were the daily maximum temperatures (in degree F) in Washington DC during the month of April, 2002: 58 73 73 53 50 48 56 73 73 66 69 63 74 82 84 91 93 89 91 80 59 69 56 64 63 66 64 74 63 69"]

The record daily maximum temperatures (in degree F) for April in the previous 50 years for the city are: 80 90 90 89 88 80 79 78 80 90 92 78 90 88 84 91 93 89 91 80 89 89 86 84 83 86 84 84 83 89.

Identify the following:

(a) The days in April 2002 when the daily maximum temperature equaled or rose above the record maximum for that day.

(b) The number of days in April 2002 when the daily maximum temperature was at least 20 degrees below the record maximum for that day.