Table:
December 31,	Depreciable

(dollars in millions)	2019	2018	Lives (Years)

Land and rights-of-way	$117.2	$117.2	20 - Indefinite

Buildings and leasehold improvements	315.4	305.2	5 - 40

Network equipment	4,044.6	3,913.3	2 - 50

Office software, furniture, fixtures and vehicles	229.3	216.3	2-14

Construction in process	38.9	47.1	n/a

Gross value	4,745.4	4,599.1

Accumulated depreciation	(2,964.6)	(2,755.1)

Property, plant and equipment, net	$1,780.8	$1,844.0

How many rows and columns does this table contain? The JSON format {"row_number": "m", "column_number": "n"} should be utilized to display the ultimate result.

There are 10 rows and 4 columns in the table. So, the final answer is {"row_number": "10", "column_number": "4"}.