Table 1
Average dust concentrations on the platform for the three stations (three days)
Station
Location
PM
2.5
(μg/m
3
) Mean (SD)
PNC (particles/cm
3
) Mean (SD)
Holland Park Station
Central Line
300 (0)
29000 (6700)
Hampstead Station
Northern Line
480 (26)
14000 (2500)
Oxford Circus Station
Victoria Line
270 (21)
24000 (4500)