TAF and METAR

Could not understand the following METAR

NIUE 210700Z AUTO 16010KT //// // ///////// 23/20 Q1015

TAF for Hanan International Airport

TAF NIUE 210505Z 2106/2206 15008KT 9999 SCT018
Report created 21. jul 07:05

between 21. jul 08:00 - 22. jul 08:00

wind 8 knots from SSE (150°) visibility > 10km scattered clouds (~50% cover) at 1800 feet