METAR NZSP 171750Z GRID04013KT 6000 IC BR DRSN FEW070 M54/
     A2821 RMK EXHAUST GRID SW=
METAR NZSP 171150Z GRID03015KT 1600 IC BLSN BR FEW000 FEW010
     SCT190 M54/ A2816 RMK VIS GRID SW 0400 STATION EXHAUST
     BLSN FEW000=
METAR NZSP 170550Z GRID04013KT 2400 IC BLSN BR FEW000 FEW010
     FEW250 M53/ A2814 RMK BR FEW000=
METAR NZSP 162350Z GRID04014KT 2400 IC BLSN BR FEW000 M52/
     A2818 RMK BLSN FEW000 EXHAUST GRID SW=