Thanks to shrugbyblog for keeping track of the attendance figures.
For 2018 so far:
Team/Av/Max
REBELS/10,000/16,100 (Hurricanes)
REDS/12,300/14,000 (Chiefs)
BRUMBIES/9,100/13,500 (Waratahs)
WARATAHS/N/A*/15,600 (Reds) [*Crowds for Rebels and Lions not made available]
SUNWOLVES/11,700/14,600 (Brumbies)
BULLS/N/A*/23,200 (Stormers) [*Crowds for Rebels and Highlanders not made available]
LIONS/15,800/25,700 (Sharks)
For 2018 so far:
Team/Av/Max
REBELS/10,000/16,100 (Hurricanes)
REDS/12,300/14,000 (Chiefs)
BRUMBIES/9,100/13,500 (Waratahs)
WARATAHS/N/A*/15,600 (Reds) [*Crowds for Rebels and Lions not made available]
SUNWOLVES/11,700/14,600 (Brumbies)
BULLS/N/A*/23,200 (Stormers) [*Crowds for Rebels and Highlanders not made available]
LIONS/15,800/25,700 (Sharks)