On an unexceptional night for the broadcast networks, NBC drama “Aquarius” opened modestly Thursday while ABC’s “100 Questions” ended its run in line with previous nights. Fox had the night’s top scripted originals in young adults with “Bones” and “Wayward Pines.”

According to preliminary national estimates from Nielsen, Charles Manson-era drama “Aquarius” averaged a 1.0 rating/4 share in adults 18-49 and 5.7 million viewers from 9 to 11 p.m., retaining most of its lead-in from “Dateline” at 8 (1.2/5 in 18-49, 6.4 million viewers overall). Compared with last year’s scripted summer launches for NBC, “Aquarius” was on par in 18-49 with the bows of dramas “Crossbones” and “Taxi Brooklyn” and below medical drama “The Night Shift” (1.6, behind “America’s Got Talent”) and comedy “Undateable” (1.3).

Viewers tuned in at 9, where the show peaked with a 1.3 demo rating and 6.6 million viewers overall, but the numbers drifted downward from there; in the 10:30 p.m. half-hour, it averaged a 0.9 in the demo and 5.1 million total viewers. As might be expected, “Aquarius” skewed fairly old, doing a 0.6 rating in 18-34 and a 1.6 in adults 25-54. In total viewers, it ranked second among the seven Big Four scripted programs (originals and repeats) airing last night, behind CBS’ repeat “The Big Bang Theory.”

In an unprecedented release strategy that might be a test case for the future, NBC made all 13 episodes of “Aquarius” available to viewers via various VOD platforms after the first two bowed last night on the broadcast network. In its next two weeks, the linear episodes of “Aquarius” will go up against the NBA Finals on ABC.

Elsewhere, Fox won the night in 18-49 behind original dramas “Bones” (1.2/5 in 18-49, 5.4 million viewers overall) and “Wayward Pines” (1.2/4 in 18-49, 4.0 million viewers overall). The former was up 20% (0.2) from its prior original of two weeks ago, and the latter held at the same demo number for a second straight week, edging out NBC’s “Aquarius” head to head.

ABC aired the final installment of its seven-night gameshow event series “500 Questions” (1.1/4 in 18-49, 5.0 million viewers overall from 8 to 10 p.m.), which matched its second highest demo score and rose 10% above its rating for last Thursday, which was also a two-hour episode. While it didn’t do breakout numbers, “500 Questions” was very consistent throughout its Memorial Day-interrupted run, and last night’s episode gave ABC its top Thursday summer scores (excluding sports) in two years. Last night, “500” picked up additional adults 18-49 viewers with each half-hour.

Closing out the night for ABC was another encore of a latenight episode of “Jimmy Kimmel Live” (0.6/2 in 18-49, 2.7 million viewers overall).

CBS has Thursday’s No. 1 program with a repeat of “The Big Bang Theory” (1.4/6 in 18-49, 7.5 million viewers overall). It was followed by encores of “The Odd Couple” (1.1/4 in 18-49, 5.4 million viewers overall), “Mom” (1.0/4 in 18-49, 4.9 million viewers overall), “Mike & Molly” (1.0/4 in 18-49, 4.8 million viewers overall) and “Elementary” (0.7/2 in 18-49, 4.0 million viewers overall).

CW aired repeats of “iZombie” (0.3/1 in 18-49, 0.8 million viewers overall) and “The Vampire Diaries” (0.2/1 in 18-49, 0.5 million viewers overall).