Hardware • Help me to read smartctl result

Code:

# smartctl -x /dev/nvme0n1 | wc -l76# smartctl -x /dev/sdb | wc -l184#

Code:

Model Number:                       ZTC-PCIEG3-128G...SMART/Health Information (NVMe Log 0x02)Critical Warning:                   0x00Temperature:                        47 CelsiusAvailable Spare:                    100%Available Spare Threshold:          10%Percentage Used:                    0%Data Units Read:                    2,677,796 [1.37 TB]Data Units Written:                 1,852,658 [948 GB]Host Read Commands:                 30,408,857Host Write Commands:                32,283,608Controller Busy Time:               5,729,466Power Cycles:                       532Power On Hours:                     4Unsafe Shutdowns:                   169Media and Data Integrity Errors:    0Error Information Log Entries:      0Warning  Comp. Temperature Time:    0Critical Comp. Temperature Time:    0