It's not time but meat mass and no two ovens are calibrated exactly the same despite what the dial is set at. I'll also go with the 135F reading for a thin chop. Even better to grill them outside over real wood charcoal.
Dining tables can differ in height. For example, a bar height table is 101 cm to 106 cm, while a counter height table is 86 cm to 91 cm. Standard dining tables are 71 cm to 76 cm. Bear in mind that this also affects the height of the chairs. The seat of a dining chair should be about 45 cm to 48 cm high.
As with shape, you will need to determine the size you need. The height of a coffee table is important. It should be no lower than 1-2 inches from the seat of your couch. The standard height for a table is 16-18 inches and pairs well with a typical sized couch.