Magnetic tape having characterized magnetic layer, magnetic tape cartridge, and magnetic tape apparatus

A magnetic tape comprising:

• a non-magnetic support;
• and
• a magnetic layer containing a ferromagnetic powder,
• wherein a difference, S0.1−S1.6, between a spacing S0.1 and a spacing S1.6 each obtained after n-hexane cleaning on a surface of the magnetic layer is equal to or less than 32 nm,
• the spacing S0.1 is a value obtained as a spacing under a pressing force of 0.1 atm from a relational expression between a pressure and a spacing obtained by performing a spacing measurement on the surface of the magnetic layer by an optical interference method under a pressing force of each of a plurality of different pressures after n-hexane cleaning, and
• the spacing S1.6 is a spacing measured on the surface of the magnetic layer by the optical interference method under a pressing force of 1.6 atm after n-hexane cleaning.