2026-10-15T09:00:00Z START s1 login
2026-10-15T09:00:03Z START s2 upload
2026-10-15T09:00:04Z END s1 login
2026-10-15T09:00:05Z START s3 download
2026-10-15T09:00:20Z END s2 upload
2026-10-15T09:00:15Z END s3 download

2026-10-15T09:05:00Z START s4 login
2026-10-15T09:05:09Z END s4 login
2026-10-15T09:06:00Z START s5 upload
2026-10-15T09:07:00Z END s6 download
2026-10-15T09:08:00Z START s7 login
2026-10-15T09:08:03Z END s7 login
2026-10-15T09:08:30Z START s7 login
2026-10-15T09:08:36Z END s7 login