Why the KID output is mean and std? And the value is very large?

like this: MMD: 100%|██████████| 100/100 [00:41<00:00, 2.40it/s, mean=2.36e+3] KID (TICPan_tests.npy): 2364.600 (104.550) how to convert to normal value for paper writing? Thank you