LAKE TEMPERATURE OQ 44 ARG nia 9 way 196? INDIANA NA 9 MAY 1967 bd 10 km 10 km a2 45 eu / Ppm TAM-1 G33 0.36 ses 50 46 row 0.30 , On AM Tam-6 44 0.38 Tasna" Ps Ay 8 TAM-6 oO ARG | otANa 22c 9 MAY 1967 a tO km | : 92 : | 43 io ARG ; | _ IND! [ANA o2c¢ 10 MAY 1967 ee | 10 km | 7 ! Fre. 127.—Weather and pollution maps for Chicago area, 9-10 May 1967 158 7