diff --git a/mimic-iv/concepts_postgres/firstday/first_day_bg.sql b/mimic-iv/concepts_postgres/firstday/first_day_bg.sql
index adac46a2..0fd1f0cd 100644
--- a/mimic-iv/concepts_postgres/firstday/first_day_bg.sql
+++ b/mimic-iv/concepts_postgres/firstday/first_day_bg.sql
@@ -1,55 +1,79 @@
 -- THIS SCRIPT IS AUTOMATICALLY GENERATED. DO NOT EDIT IT DIRECTLY.
-DROP TABLE IF EXISTS mimiciv_derived.first_day_bg; CREATE TABLE mimiciv_derived.first_day_bg AS
-/* Highest/lowest blood gas values for all blood specimens, */ /* including venous/arterial/mixed */
+DROP TABLE IF EXISTS mimiciv_derived.first_day_bg;
+CREATE TABLE mimiciv_derived.first_day_bg AS
+/* Highest/lowest blood gas values for all blood specimens, */
+/* including venous/arterial/mixed */
 SELECT
   ie.subject_id,
   ie.stay_id,
   MIN(lactate) AS lactate_min,
+  AVG(lactate) AS lactate_mean,
   MAX(lactate) AS lactate_max,
   MIN(ph) AS ph_min,
+  AVG(ph) AS ph_mean,
   MAX(ph) AS ph_max,
   MIN(so2) AS so2_min,
+  AVG(so2) AS so2_mean,
   MAX(so2) AS so2_max,
   MIN(po2) AS po2_min,
+  AVG(po2) AS po2_mean,
   MAX(po2) AS po2_max,
   MIN(pco2) AS pco2_min,
+  AVG(pco2) AS pco2_mean,
   MAX(pco2) AS pco2_max,
   MIN(aado2) AS aado2_min,
+  AVG(aado2) AS aado2_mean,
   MAX(aado2) AS aado2_max,
   MIN(aado2_calc) AS aado2_calc_min,
+  AVG(aado2_calc) AS aado2_calc_mean,
   MAX(aado2_calc) AS aado2_calc_max,
   MIN(pao2fio2ratio) AS pao2fio2ratio_min,
+  AVG(pao2fio2ratio) AS pao2fio2ratio_mean,
   MAX(pao2fio2ratio) AS pao2fio2ratio_max,
   MIN(baseexcess) AS baseexcess_min,
+  AVG(baseexcess) AS baseexcess_mean,
   MAX(baseexcess) AS baseexcess_max,
   MIN(bicarbonate) AS bicarbonate_min,
+  AVG(bicarbonate) AS bicarbonate_mean,
   MAX(bicarbonate) AS bicarbonate_max,
   MIN(totalco2) AS totalco2_min,
+  AVG(totalco2) AS totalco2_mean,
   MAX(totalco2) AS totalco2_max,
   MIN(hematocrit) AS hematocrit_min,
+  AVG(hematocrit) AS hematocrit_mean,
   MAX(hematocrit) AS hematocrit_max,
   MIN(hemoglobin) AS hemoglobin_min,
+  AVG(hemoglobin) AS hemoglobin_mean,
   MAX(hemoglobin) AS hemoglobin_max,
   MIN(carboxyhemoglobin) AS carboxyhemoglobin_min,
+  AVG(carboxyhemoglobin) AS carboxyhemoglobin_mean,
   MAX(carboxyhemoglobin) AS carboxyhemoglobin_max,
   MIN(methemoglobin) AS methemoglobin_min,
+  AVG(methemoglobin) AS methemoglobin_mean,
   MAX(methemoglobin) AS methemoglobin_max,
   MIN(temperature) AS temperature_min,
+  AVG(temperature) AS temperature_mean,
   MAX(temperature) AS temperature_max,
   MIN(chloride) AS chloride_min,
+  AVG(chloride) AS chloride_mean,
   MAX(chloride) AS chloride_max,
   MIN(calcium) AS calcium_min,
+  AVG(calcium) AS calcium_mean,
   MAX(calcium) AS calcium_max,
   MIN(glucose) AS glucose_min,
+  AVG(glucose) AS glucose_mean,
   MAX(glucose) AS glucose_max,
   MIN(potassium) AS potassium_min,
+  AVG(potassium) AS potassium_mean,
   MAX(potassium) AS potassium_max,
   MIN(sodium) AS sodium_min,
+  AVG(sodium) AS sodium_mean,
   MAX(sodium) AS sodium_max
 FROM mimiciv_icu.icustays AS ie
-LEFT JOIN mimiciv_derived.bg AS bg
+  LEFT JOIN mimiciv_derived.bg AS bg
   ON ie.subject_id = bg.subject_id
-  AND bg.charttime >= ie.intime - INTERVAL '6 HOUR'
+    AND bg.charttime >= ie.intime - INTERVAL
+'6 HOUR'
   AND bg.charttime <= ie.intime + INTERVAL '1 DAY'
 GROUP BY
   ie.subject_id,
diff --git a/mimic-iv/concepts_postgres/firstday/first_day_bg_art.sql b/mimic-iv/concepts_postgres/firstday/first_day_bg_art.sql
index d3745052..dc199565 100644
--- a/mimic-iv/concepts_postgres/firstday/first_day_bg_art.sql
+++ b/mimic-iv/concepts_postgres/firstday/first_day_bg_art.sql
@@ -1,56 +1,79 @@
 -- THIS SCRIPT IS AUTOMATICALLY GENERATED. DO NOT EDIT IT DIRECTLY.
-DROP TABLE IF EXISTS mimiciv_derived.first_day_bg_art; CREATE TABLE mimiciv_derived.first_day_bg_art AS
+DROP TABLE IF EXISTS mimiciv_derived.first_day_bg_art;
+CREATE TABLE mimiciv_derived.first_day_bg_art AS
 /* Highest/lowest blood gas values for arterial blood specimens */
 SELECT
   ie.subject_id,
   ie.stay_id,
   MIN(lactate) AS lactate_min,
+  AVG(lactate) AS lactate_mean,
   MAX(lactate) AS lactate_max,
   MIN(ph) AS ph_min,
+  AVG(ph) AS ph_mean,
   MAX(ph) AS ph_max,
   MIN(so2) AS so2_min,
+  AVG(so2) AS so2_mean,
   MAX(so2) AS so2_max,
   MIN(po2) AS po2_min,
+  AVG(po2) AS po2_mean,
   MAX(po2) AS po2_max,
   MIN(pco2) AS pco2_min,
+  AVG(pco2) AS pco2_mean,
   MAX(pco2) AS pco2_max,
   MIN(aado2) AS aado2_min,
+  AVG(aado2) AS aado2_mean,
   MAX(aado2) AS aado2_max,
   MIN(aado2_calc) AS aado2_calc_min,
+  AVG(aado2_calc) AS aado2_calc_mean,
   MAX(aado2_calc) AS aado2_calc_max,
   MIN(pao2fio2ratio) AS pao2fio2ratio_min,
+  AVG(pao2fio2ratio) AS pao2fio2ratio_mean,
   MAX(pao2fio2ratio) AS pao2fio2ratio_max,
   MIN(baseexcess) AS baseexcess_min,
+  AVG(baseexcess) AS baseexcess_mean,
   MAX(baseexcess) AS baseexcess_max,
   MIN(bicarbonate) AS bicarbonate_min,
+  AVG(bicarbonate) AS bicarbonate_mean,
   MAX(bicarbonate) AS bicarbonate_max,
   MIN(totalco2) AS totalco2_min,
+  AVG(totalco2) AS totalco2_mean,
   MAX(totalco2) AS totalco2_max,
   MIN(hematocrit) AS hematocrit_min,
+  AVG(hematocrit) AS hematocrit_mean,
   MAX(hematocrit) AS hematocrit_max,
   MIN(hemoglobin) AS hemoglobin_min,
+  AVG(hemoglobin) AS hemoglobin_mean,
   MAX(hemoglobin) AS hemoglobin_max,
   MIN(carboxyhemoglobin) AS carboxyhemoglobin_min,
+  AVG(carboxyhemoglobin) AS carboxyhemoglobin_mean,
   MAX(carboxyhemoglobin) AS carboxyhemoglobin_max,
   MIN(methemoglobin) AS methemoglobin_min,
+  AVG(methemoglobin) AS methemoglobin_mean,
   MAX(methemoglobin) AS methemoglobin_max,
   MIN(temperature) AS temperature_min,
+  AVG(temperature) AS temperature_mean,
   MAX(temperature) AS temperature_max,
   MIN(chloride) AS chloride_min,
+  AVG(chloride) AS chloride_mean,
   MAX(chloride) AS chloride_max,
   MIN(calcium) AS calcium_min,
+  AVG(calcium) AS calcium_mean,
   MAX(calcium) AS calcium_max,
   MIN(glucose) AS glucose_min,
+  AVG(glucose) AS glucose_mean,
   MAX(glucose) AS glucose_max,
   MIN(potassium) AS potassium_min,
+  AVG(potassium) AS potassium_mean,
   MAX(potassium) AS potassium_max,
   MIN(sodium) AS sodium_min,
+  AVG(sodium) AS sodium_mean,
   MAX(sodium) AS sodium_max
 FROM mimiciv_icu.icustays AS ie
-LEFT JOIN mimiciv_derived.bg AS bg
+  LEFT JOIN mimiciv_derived.bg AS bg
   ON ie.subject_id = bg.subject_id
-  AND bg.specimen = 'ART.'
-  AND bg.charttime >= ie.intime - INTERVAL '6 HOUR'
+    AND bg.specimen = 'ART.'
+    AND bg.charttime >= ie.intime - INTERVAL
+'6 HOUR'
   AND bg.charttime <= ie.intime + INTERVAL '1 DAY'
 GROUP BY
   ie.subject_id,
diff --git a/mimic-iv/concepts_postgres/firstday/first_day_lab.sql b/mimic-iv/concepts_postgres/firstday/first_day_lab.sql
index 841d8558..a7dbecdf 100644
--- a/mimic-iv/concepts_postgres/firstday/first_day_lab.sql
+++ b/mimic-iv/concepts_postgres/firstday/first_day_lab.sql
@@ -1,138 +1,197 @@
 -- THIS SCRIPT IS AUTOMATICALLY GENERATED. DO NOT EDIT IT DIRECTLY.
-DROP TABLE IF EXISTS mimiciv_derived.first_day_lab; CREATE TABLE mimiciv_derived.first_day_lab AS
-WITH cbc AS (
-  SELECT
-    ie.stay_id,
-    MIN(hematocrit) AS hematocrit_min,
-    MAX(hematocrit) AS hematocrit_max,
-    MIN(hemoglobin) AS hemoglobin_min,
-    MAX(hemoglobin) AS hemoglobin_max,
-    MIN(platelet) AS platelets_min,
-    MAX(platelet) AS platelets_max,
-    MIN(wbc) AS wbc_min,
-    MAX(wbc) AS wbc_max
-  FROM mimiciv_icu.icustays AS ie
-  LEFT JOIN mimiciv_derived.complete_blood_count AS le
-    ON le.subject_id = ie.subject_id
-    AND le.charttime >= ie.intime - INTERVAL '6 HOUR'
+DROP TABLE IF EXISTS mimiciv_derived.first_day_lab;
+CREATE TABLE mimiciv_derived.first_day_lab AS
+WITH
+  cbc
+  AS
+  (
+    SELECT
+      ie.stay_id,
+      MIN(hematocrit) AS hematocrit_min,
+      AVG(hematocrit) AS hematocrit_mean,
+      MAX(hematocrit) AS hematocrit_max,
+      MIN(hemoglobin) AS hemoglobin_min,
+      AVG(hemoglobin) AS hemoglobin_mean,
+      MAX(hemoglobin) AS hemoglobin_max,
+      MIN(platelet) AS platelets_min,
+      AVG(platelet) AS platelets_mean,
+      MAX(platelet) AS platelets_max,
+      MIN(wbc) AS wbc_min,
+      AVG(wbc) AS wbc_mean,
+      MAX(wbc) AS wbc_max
+    FROM mimiciv_icu.icustays AS ie
+      LEFT JOIN mimiciv_derived.complete_blood_count AS le
+      ON le.subject_id = ie.subject_id
+        AND le.charttime >= ie.intime - INTERVAL
+  
+  
+  
+   '6 HOUR'
     AND le.charttime <= ie.intime + INTERVAL '1 DAY'
   GROUP BY
     ie.stay_id
-), chem AS (
+), chem AS
+(
   SELECT
-    ie.stay_id,
-    MIN(albumin) AS albumin_min,
-    MAX(albumin) AS albumin_max,
-    MIN(globulin) AS globulin_min,
-    MAX(globulin) AS globulin_max,
-    MIN(total_protein) AS total_protein_min,
-    MAX(total_protein) AS total_protein_max,
-    MIN(aniongap) AS aniongap_min,
-    MAX(aniongap) AS aniongap_max,
-    MIN(bicarbonate) AS bicarbonate_min,
-    MAX(bicarbonate) AS bicarbonate_max,
-    MIN(bun) AS bun_min,
-    MAX(bun) AS bun_max,
-    MIN(calcium) AS calcium_min,
-    MAX(calcium) AS calcium_max,
-    MIN(chloride) AS chloride_min,
-    MAX(chloride) AS chloride_max,
-    MIN(creatinine) AS creatinine_min,
-    MAX(creatinine) AS creatinine_max,
-    MIN(glucose) AS glucose_min,
-    MAX(glucose) AS glucose_max,
-    MIN(sodium) AS sodium_min,
-    MAX(sodium) AS sodium_max,
-    MIN(potassium) AS potassium_min,
-    MAX(potassium) AS potassium_max
-  FROM mimiciv_icu.icustays AS ie
+  ie.stay_id,
+  MIN(albumin) AS albumin_min,
+  AVG(albumin) AS albumin_mean,
+  MAX(albumin) AS albumin_max,
+  MIN(globulin) AS globulin_min,
+  AVG(globulin) AS globulin_mean,
+  MAX(globulin) AS globulin_max,
+  MIN(total_protein) AS total_protein_min,
+  AVG(total_protein) AS total_protein_mean,
+  MAX(total_protein) AS total_protein_max,
+  MIN(aniongap) AS aniongap_min,
+  AVG(aniongap) AS aniongap_mean,
+  MAX(aniongap) AS aniongap_max,
+  MIN(bicarbonate) AS bicarbonate_min,
+  AVG(bicarbonate) AS bicarbonate_mean,
+  MAX(bicarbonate) AS bicarbonate_max,
+  MIN(bun) AS bun_min,
+  AVG(bun) AS bun_mean,
+  MAX(bun) AS bun_max,
+  MIN(calcium) AS calcium_min,
+  AVG(calcium) AS calcium_mean,
+  MAX(calcium) AS calcium_max,
+  MIN(chloride) AS chloride_min,
+  AVG(chloride) AS chloride_mean,
+  MAX(chloride) AS chloride_max,
+  MIN(creatinine) AS creatinine_min,
+  AVG(creatinine) AS creatinine_mean,
+  MAX(creatinine) AS creatinine_max,
+  MIN(glucose) AS glucose_min,
+  AVG(glucose) AS glucose_mean,
+  MAX(glucose) AS glucose_max,
+  MIN(sodium) AS sodium_min,
+  AVG(sodium) AS sodium_mean,
+  MAX(sodium) AS sodium_max,
+  MIN(potassium) AS potassium_min,
+  AVG(potassium) AS potassium_mean,
+  MAX(potassium) AS potassium_max
+FROM mimiciv_icu.icustays AS ie
   LEFT JOIN mimiciv_derived.chemistry AS le
-    ON le.subject_id = ie.subject_id
-    AND le.charttime >= ie.intime - INTERVAL '6 HOUR'
+  ON le.subject_id = ie.subject_id
+    AND le.charttime >= ie.intime - INTERVAL
+'6 HOUR'
     AND le.charttime <= ie.intime + INTERVAL '1 DAY'
   GROUP BY
     ie.stay_id
-), diff AS (
+), diff AS
+(
   SELECT
-    ie.stay_id,
-    MIN(basophils_abs) AS abs_basophils_min,
-    MAX(basophils_abs) AS abs_basophils_max,
-    MIN(eosinophils_abs) AS abs_eosinophils_min,
-    MAX(eosinophils_abs) AS abs_eosinophils_max,
-    MIN(lymphocytes_abs) AS abs_lymphocytes_min,
-    MAX(lymphocytes_abs) AS abs_lymphocytes_max,
-    MIN(monocytes_abs) AS abs_monocytes_min,
-    MAX(monocytes_abs) AS abs_monocytes_max,
-    MIN(neutrophils_abs) AS abs_neutrophils_min,
-    MAX(neutrophils_abs) AS abs_neutrophils_max,
-    MIN(atypical_lymphocytes) AS atyps_min,
-    MAX(atypical_lymphocytes) AS atyps_max,
-    MIN(bands) AS bands_min,
-    MAX(bands) AS bands_max,
-    MIN(immature_granulocytes) AS imm_granulocytes_min,
-    MAX(immature_granulocytes) AS imm_granulocytes_max,
-    MIN(metamyelocytes) AS metas_min,
-    MAX(metamyelocytes) AS metas_max,
-    MIN(nrbc) AS nrbc_min,
-    MAX(nrbc) AS nrbc_max
-  FROM mimiciv_icu.icustays AS ie
+  ie.stay_id,
+  MIN(basophils_abs) AS abs_basophils_min,
+  AVG(basophils_abs) AS abs_basophils_mean,
+  MAX(basophils_abs) AS abs_basophils_max,
+  MIN(eosinophils_abs) AS abs_eosinophils_min,
+  AVG(eosinophils_abs) AS abs_eosinophils_mean,
+  MAX(eosinophils_abs) AS abs_eosinophils_max,
+  MIN(lymphocytes_abs) AS abs_lymphocytes_min,
+  AVG(lymphocytes_abs) AS abs_lymphocytes_mean,
+  MAX(lymphocytes_abs) AS abs_lymphocytes_max,
+  MIN(monocytes_abs) AS abs_monocytes_min,
+  AVG(monocytes_abs) AS abs_monocytes_mean,
+  MAX(monocytes_abs) AS abs_monocytes_max,
+  MIN(neutrophils_abs) AS abs_neutrophils_min,
+  AVG(neutrophils_abs) AS abs_neutrophils_mean,
+  MAX(neutrophils_abs) AS abs_neutrophils_max,
+  MIN(atypical_lymphocytes) AS atyps_min,
+  AVG(atypical_lymphocytes) AS atyps_mean,
+  MAX(atypical_lymphocytes) AS atyps_max,
+  MIN(bands) AS bands_min,
+  AVG(bands) AS bands_mean,
+  MAX(bands) AS bands_max,
+  MIN(immature_granulocytes) AS imm_granulocytes_min,
+  AVG(immature_granulocytes) AS imm_granulocytes_mean,
+  MAX(immature_granulocytes) AS imm_granulocytes_max,
+  MIN(metamyelocytes) AS metas_min,
+  AVG(metamyelocytes) AS metas_mean,
+  MAX(metamyelocytes) AS metas_max,
+  MIN(nrbc) AS nrbc_min,
+  AVG(nrbc) AS nrbc_mean,
+  MAX(nrbc) AS nrbc_max
+FROM mimiciv_icu.icustays AS ie
   LEFT JOIN mimiciv_derived.blood_differential AS le
-    ON le.subject_id = ie.subject_id
-    AND le.charttime >= ie.intime - INTERVAL '6 HOUR'
+  ON le.subject_id = ie.subject_id
+    AND le.charttime >= ie.intime - INTERVAL
+'6 HOUR'
     AND le.charttime <= ie.intime + INTERVAL '1 DAY'
   GROUP BY
     ie.stay_id
-), coag AS (
+), coag AS
+(
   SELECT
-    ie.stay_id,
-    MIN(d_dimer) AS d_dimer_min,
-    MAX(d_dimer) AS d_dimer_max,
-    MIN(fibrinogen) AS fibrinogen_min,
-    MAX(fibrinogen) AS fibrinogen_max,
-    MIN(thrombin) AS thrombin_min,
-    MAX(thrombin) AS thrombin_max,
-    MIN(inr) AS inr_min,
-    MAX(inr) AS inr_max,
-    MIN(pt) AS pt_min,
-    MAX(pt) AS pt_max,
-    MIN(ptt) AS ptt_min,
-    MAX(ptt) AS ptt_max
-  FROM mimiciv_icu.icustays AS ie
+  ie.stay_id,
+  MIN(d_dimer) AS d_dimer_min,
+  AVG(d_dimer) AS d_dimer_mean,
+  MAX(d_dimer) AS d_dimer_max,
+  MIN(fibrinogen) AS fibrinogen_min,
+  AVG(fibrinogen) AS fibrinogen_mean,
+  MAX(fibrinogen) AS fibrinogen_max,
+  MIN(thrombin) AS thrombin_min,
+  AVG(thrombin) AS thrombin_mean,
+  MAX(thrombin) AS thrombin_max,
+  MIN(inr) AS inr_min,
+  AVG(inr) AS inr_mean,
+  MAX(inr) AS inr_max,
+  MIN(pt) AS pt_min,
+  AVG(pt) AS pt_mean,
+  MAX(pt) AS pt_max,
+  MIN(ptt) AS ptt_min,
+  AVG(ptt) AS ptt_mean,
+  MAX(ptt) AS ptt_max
+FROM mimiciv_icu.icustays AS ie
   LEFT JOIN mimiciv_derived.coagulation AS le
-    ON le.subject_id = ie.subject_id
-    AND le.charttime >= ie.intime - INTERVAL '6 HOUR'
+  ON le.subject_id = ie.subject_id
+    AND le.charttime >= ie.intime - INTERVAL
+'6 HOUR'
     AND le.charttime <= ie.intime + INTERVAL '1 DAY'
   GROUP BY
     ie.stay_id
-), enz AS (
+), enz AS
+(
   SELECT
-    ie.stay_id,
-    MIN(alt) AS alt_min,
-    MAX(alt) AS alt_max,
-    MIN(alp) AS alp_min,
-    MAX(alp) AS alp_max,
-    MIN(ast) AS ast_min,
-    MAX(ast) AS ast_max,
-    MIN(amylase) AS amylase_min,
-    MAX(amylase) AS amylase_max,
-    MIN(bilirubin_total) AS bilirubin_total_min,
-    MAX(bilirubin_total) AS bilirubin_total_max,
-    MIN(bilirubin_direct) AS bilirubin_direct_min,
-    MAX(bilirubin_direct) AS bilirubin_direct_max,
-    MIN(bilirubin_indirect) AS bilirubin_indirect_min,
-    MAX(bilirubin_indirect) AS bilirubin_indirect_max,
-    MIN(ck_cpk) AS ck_cpk_min,
-    MAX(ck_cpk) AS ck_cpk_max,
-    MIN(ck_mb) AS ck_mb_min,
-    MAX(ck_mb) AS ck_mb_max,
-    MIN(ggt) AS ggt_min,
-    MAX(ggt) AS ggt_max,
-    MIN(ld_ldh) AS ld_ldh_min,
-    MAX(ld_ldh) AS ld_ldh_max
-  FROM mimiciv_icu.icustays AS ie
+  ie.stay_id,
+  MIN(alt) AS alt_min,
+  AVG(alt) AS alt_mean,
+  MAX(alt) AS alt_max,
+  MIN(alp) AS alp_min,
+  AVG(alp) AS alp_mean,
+  MAX(alp) AS alp_max,
+  MIN(ast) AS ast_min,
+  AVG(ast) AS ast_mean,
+  MAX(ast) AS ast_max,
+  MIN(amylase) AS amylase_min,
+  AVG(amylase) AS amylase_mean,
+  MAX(amylase) AS amylase_max,
+  MIN(bilirubin_total) AS bilirubin_total_min,
+  AVG(bilirubin_total) AS bilirubin_total_mean,
+  MAX(bilirubin_total) AS bilirubin_total_max,
+  MIN(bilirubin_direct) AS bilirubin_direct_min,
+  AVG(bilirubin_direct) AS bilirubin_direct_mean,
+  MAX(bilirubin_direct) AS bilirubin_direct_max,
+  MIN(bilirubin_indirect) AS bilirubin_indirect_min,
+  AVG(bilirubin_indirect) AS bilirubin_indirect_mean,
+  MAX(bilirubin_indirect) AS bilirubin_indirect_max,
+  MIN(ck_cpk) AS ck_cpk_min,
+  AVG(ck_cpk) AS ck_cpk_mean,
+  MAX(ck_cpk) AS ck_cpk_max,
+  MIN(ck_mb) AS ck_mb_min,
+  AVG(ck_mb) AS ck_mb_mean,
+  MAX(ck_mb) AS ck_mb_max,
+  MIN(ggt) AS ggt_min,
+  AVG(ggt) AS ggt_mean,
+  MAX(ggt) AS ggt_max,
+  MIN(ld_ldh) AS ld_ldh_min,
+  AVG(ld_ldh) AS ld_ldh_mean,
+  MAX(ld_ldh) AS ld_ldh_max
+FROM mimiciv_icu.icustays AS ie
   LEFT JOIN mimiciv_derived.enzyme AS le
-    ON le.subject_id = ie.subject_id
-    AND le.charttime >= ie.intime - INTERVAL '6 HOUR'
+  ON le.subject_id = ie.subject_id
+    AND le.charttime >= ie.intime - INTERVAL
+'6 HOUR'
     AND le.charttime <= ie.intime + INTERVAL '1 DAY'
   GROUP BY
     ie.stay_id
@@ -141,99 +200,142 @@ SELECT
   ie.subject_id,
   ie.stay_id, /* complete blood count */
   hematocrit_min,
+  hematocrit_mean,
   hematocrit_max,
   hemoglobin_min,
+  hemoglobin_mean,
   hemoglobin_max,
   platelets_min,
+  platelets_mean,
   platelets_max,
   wbc_min,
+  wbc_mean,
   wbc_max, /* chemistry */
   albumin_min,
+  albumin_mean,
   albumin_max,
   globulin_min,
+  globulin_mean,
   globulin_max,
   total_protein_min,
+  total_protein_mean,
   total_protein_max,
   aniongap_min,
+  aniongap_mean,
   aniongap_max,
   bicarbonate_min,
+  bicarbonate_mean,
   bicarbonate_max,
   bun_min,
+  bun_mean,
   bun_max,
   calcium_min,
+  calcium_mean,
   calcium_max,
   chloride_min,
+  chloride_mean,
   chloride_max,
   creatinine_min,
+  creatinine_mean,
   creatinine_max,
   glucose_min,
+  glucose_mean,
   glucose_max,
   sodium_min,
+  sodium_mean,
   sodium_max,
   potassium_min,
+  potassium_mean,
   potassium_max, /* blood differential */
   abs_basophils_min,
+  abs_basophils_mean,
   abs_basophils_max,
   abs_eosinophils_min,
+  abs_eosinophils_mean,
   abs_eosinophils_max,
   abs_lymphocytes_min,
+  abs_lymphocytes_mean,
   abs_lymphocytes_max,
   abs_monocytes_min,
+  abs_monocytes_mean,
   abs_monocytes_max,
   abs_neutrophils_min,
+  abs_neutrophils_mean,
   abs_neutrophils_max,
   atyps_min,
+  atyps_mean,
   atyps_max,
   bands_min,
+  bands_mean,
   bands_max,
   imm_granulocytes_min,
+  imm_granulocytes_mean,
   imm_granulocytes_max,
   metas_min,
+  metas_mean,
   metas_max,
   nrbc_min,
+  nrbc_mean,
   nrbc_max, /* coagulation */
   d_dimer_min,
+  d_dimer_mean,
   d_dimer_max,
   fibrinogen_min,
+  fibrinogen_mean,
   fibrinogen_max,
   thrombin_min,
+  thrombin_mean,
   thrombin_max,
   inr_min,
+  inr_mean,
   inr_max,
   pt_min,
+  pt_mean,
   pt_max,
   ptt_min,
+  ptt_mean,
   ptt_max, /* enzymes and bilirubin */
   alt_min,
+  alt_mean,
   alt_max,
   alp_min,
+  alp_mean,
   alp_max,
   ast_min,
+  ast_mean,
   ast_max,
   amylase_min,
+  amylase_mean,
   amylase_max,
   bilirubin_total_min,
+  bilirubin_total_mean,
   bilirubin_total_max,
   bilirubin_direct_min,
+  bilirubin_direct_mean,
   bilirubin_direct_max,
   bilirubin_indirect_min,
+  bilirubin_indirect_mean,
   bilirubin_indirect_max,
   ck_cpk_min,
+  ck_cpk_mean,
   ck_cpk_max,
   ck_mb_min,
+  ck_mb_mean,
   ck_mb_max,
   ggt_min,
+  ggt_mean,
   ggt_max,
   ld_ldh_min,
+  ld_ldh_mean,
   ld_ldh_max
 FROM mimiciv_icu.icustays AS ie
-LEFT JOIN cbc
+  LEFT JOIN cbc
   ON ie.stay_id = cbc.stay_id
-LEFT JOIN chem
+  LEFT JOIN chem
   ON ie.stay_id = chem.stay_id
-LEFT JOIN diff
+  LEFT JOIN diff
   ON ie.stay_id = diff.stay_id
-LEFT JOIN coag
+  LEFT JOIN coag
   ON ie.stay_id = coag.stay_id
-LEFT JOIN enz
+  LEFT JOIN enz
   ON ie.stay_id = enz.stay_id
\ No newline at end of file