./checkzone   0
./checkzone  75
./checkzone 150
./checkzone 225
./checkzone 300
./checkzone 375
./checkzone 450
./checkzone 525
./checkzone 600
./checkzone 675
./checkzone 750
./checkzone 825
./checkzone 900
./checkzone 975
./checkzone 1050
./checkzone 1125
./checkzone 1200
./checkzone 1275
./checkzone 1350
./checkzone 1425
./checkzone 1500
./checkzone 1575
./checkzone 1650
./checkzone 1725
