Default Table sort order not working as expected

host="*" index=main sourcetype=WwanSignal uid="3F77F61645E8323E205F832212" | table _time deviceName user quality prevQuality prevDuration RSRP RSRQ RSSI SINR SQ lat lon is returning in this sort order. Why is _time not sorting as expected, newest to oldest? Running 6.4.0. I though by default sort is base on _time field newest to oldest. ![alt text][1] [1]: /storage/temp/126217-sortorderwrong.png