Almost 31 million viewers watched television coverage of Donald Trump's swearing-in as the 45th president of the United States and other inauguration day activities on Jan. 20.

According to live + same-day data from Nielsen Holdings, 12 networks combined to average a 20.1 household rating, translating into 30.6 million viewers from 10 a.m. ET to 6 p.m. ET.

The deliveries surpassed the 14.0 household rating and 20.6 million viewers for the most recent inauguration day coverage on Jan. 21, 2013, when Barack Obama was sworn in for his second term. Eighteen networks followed the presidential proceedings from 10 a.m. to 4:30 p.m. ET on Martin Luther King Day in 2013.

The inauguration audience for Trump stands as the fifth-most-watched of the 13 tracked by Nielsen since Richard Nixon became the 37th U.S. President on Jan. 20, 1969.

Coverage of Ronald Reagan's first swearing ceremony as the 40th U.S. president and attendant ceremonies on Jan. 20, 1981, at the dawn of the cable era, drew the largest inauguration day audience on record with 41.8 million viewers. The first inauguration of Obama on Jan. 20, 2009 — the day he became the first African-American president — was second with 37.8 million viewers.

Jimmy Carter's inauguration as the 39th president on Jan. 20, 1977 was third with 34.1 million, ahead of the second inauguration ceremony for Nixon in 1973 with more than 32.9 million watchers.

Coverage of Trump's inauguration was provided by broadcast networks ABC (US), CBS (US), NBC (US), Telemundo (US) and Univision (US), as well as cable networks MSNBC (US), CNBC (US), FOX News Channel (US), FOX Business Network (US), CNN (US), HLN (US) and Galavision (US).