Contours z_19 (1) DEPRESSION INDEX INTERMEDIATE Contours z_18 (2) DEPRESSION INDEX INTERMEDIATE Contours z_17 (3) DEPRESSION INDEX INTERMEDIATE Contours z_16 (4) DEPRESSION INDEX INTERMEDIATE Contours z_15 (5) DEPRESSION INDEX INTERMEDIATE Contours z_14 (6) DEPRESSION INDEX INTERMEDIATE Contours z_13 (7) DEPRESSION INDEX INTERMEDIATE Contours z_12 (8) DEPRESSION INDEX INTERMEDIATE