Fig. 5

(a) Correlation between mass concentration of PM (3 ranges) and BC for indoor (b) Correlation between mass concentration of PM(3 ranges) and BC for outdoor (c) Correlation between mass concentration of indoor PM (31 ranges) and BC (d) Correlation between mass concentration of outdoor PM (31 ranges) and BC (e) Correlation between the number concentration of indoor PM (31 ranges) and BC (f) Correlation between the number concentration of indoor PM (31 ranges) and BC.