A good Antenna for 5Ghz Wifi?

[Lord of nothing]

Hi
I will install 2x 5Ghz Antenna for use 1W Wifi. 
I look for my personal favourite Chinesse - German Company what the offer me.

I found this Antenna: https://www.delock.de/produkte/1468_Antennen/89537/merkmale.html
This Image:

look like the use an PCB as Base? Vertical mean here the Antenna work like a multi directional Antenna?  So with 2 Antenna I have turn one 90" to an side for a good Coverage?!
Thanks

[0culus]

It looks like, based on those radiation patterns, that like most home wifi routers it will be radiating most of it's energy in a sort of plane parallel to the ground around the router? This is great for single level buildings, but if you need coverage on an upper floor from the same antenna(s), it may not work well even with two of them in different orientations, since perfect isotropic antennas don't exist (if they did, you wouldn't have this problem!)

[Lord of nothing]

Its for the Rooftop to have Wifi on the Bus, Bim Station. 
And maybe free for guests.