diff --git a/pkg/datastore/sqlstore/migrations/postgres/10_alter_numeric_column_precision.sql b/pkg/datastore/sqlstore/migrations/postgres/10_alter_numeric_column_precision.sql
new file mode 100644
index 0000000..d26c849
--- /dev/null
+++ b/pkg/datastore/sqlstore/migrations/postgres/10_alter_numeric_column_precision.sql
@@ -0,0 +1,12 @@
+-- +migrate Up
+
+ALTER TABLE daily_site_stats ALTER COLUMN bounce_rate TYPE NUMERIC;
+ALTER TABLE daily_page_stats ALTER COLUMN bounce_rate TYPE NUMERIC;
+ALTER TABLE daily_referrer_stats ALTER COLUMN bounce_rate TYPE NUMERIC;
+ALTER TABLE daily_site_stats ALTER COLUMN avg_duration TYPE NUMERIC;
+ALTER TABLE daily_page_stats ALTER COLUMN avg_duration TYPE NUMERIC;
+ALTER TABLE daily_referrer_stats ALTER COLUMN avg_duration TYPE NUMERIC;
+
+-- +migrate Down
+
+
diff --git a/pkg/datastore/sqlstore/page_stats.go b/pkg/datastore/sqlstore/page_stats.go
index 262611e..cdd0ae8 100644
--- a/pkg/datastore/sqlstore/page_stats.go
+++ b/pkg/datastore/sqlstore/page_stats.go
@@ -28,7 +28,7 @@ func (db *sqlstore) insertPageStats(s *models.PageStats) error {
 }
 
 func (db *sqlstore) updatePageStats(s *models.PageStats) error {
-	query := db.Rebind(`UPDATE daily_page_stats SET pageviews = ?, visitors = ?, entries = ?, bounce_rate = ROUND(?, 4), avg_duration = ROUND(?, 4), known_durations = ? WHERE site_id = ? AND hostname = ? AND pathname = ? AND date = ?`)
+	query := db.Rebind(`UPDATE daily_page_stats SET pageviews = ?, visitors = ?, entries = ?, bounce_rate = ?, avg_duration = ?, known_durations = ? WHERE site_id = ? AND hostname = ? AND pathname = ? AND date = ?`)
 	_, err := db.Exec(query, s.Pageviews, s.Visitors, s.Entries, s.BounceRate, s.AvgDuration, s.KnownDurations, s.SiteID, s.Hostname, s.Pathname, s.Date.Format("2006-01-02"))
 	return err
 }
@@ -41,8 +41,8 @@ func (db *sqlstore) GetAggregatedPageStats(siteID int64, startDate time.Time, en
 		SUM(pageviews) AS pageviews, 
 		SUM(visitors) AS visitors, 
 		SUM(entries) AS entries, 
-		COALESCE(ROUND(SUM(entries*bounce_rate) / NULLIF(SUM(entries), 0), 4), 0.00) AS bounce_rate, 
-		COALESCE(ROUND(SUM(avg_duration*pageviews) / SUM(pageviews), 4), 0.00) AS avg_duration 
+		COALESCE(SUM(entries*bounce_rate) / NULLIF(SUM(entries), 0), 0.00) AS bounce_rate, 
+		COALESCE(SUM(avg_duration*pageviews) / SUM(pageviews), 0.00) AS avg_duration 
 		FROM daily_page_stats WHERE site_id = ? AND date >= ? AND date <= ? 
 		GROUP BY hostname, pathname 
 		ORDER BY pageviews DESC LIMIT ?`)
diff --git a/pkg/datastore/sqlstore/referrer_stats.go b/pkg/datastore/sqlstore/referrer_stats.go
index 8896faa..f15592b 100644
--- a/pkg/datastore/sqlstore/referrer_stats.go
+++ b/pkg/datastore/sqlstore/referrer_stats.go
@@ -28,7 +28,7 @@ func (db *sqlstore) insertReferrerStats(s *models.ReferrerStats) error {
 }
 
 func (db *sqlstore) updateReferrerStats(s *models.ReferrerStats) error {
-	query := db.Rebind(`UPDATE daily_referrer_stats SET visitors = ?, pageviews = ?, bounce_rate = ROUND(?, 4), avg_duration = ROUND(?, 4), known_durations = ?, groupname = ? WHERE site_id = ? AND hostname = ? AND pathname = ? AND date = ?`)
+	query := db.Rebind(`UPDATE daily_referrer_stats SET visitors = ?, pageviews = ?, bounce_rate = ?, avg_duration = ?, known_durations = ?, groupname = ? WHERE site_id = ? AND hostname = ? AND pathname = ? AND date = ?`)
 	_, err := db.Exec(query, s.Visitors, s.Pageviews, s.BounceRate, s.AvgDuration, s.KnownDurations, s.Group, s.SiteID, s.Hostname, s.Pathname, s.Date.Format("2006-01-02"))
 	return err
 }
@@ -42,8 +42,8 @@ func (db *sqlstore) GetAggregatedReferrerStats(siteID int64, startDate time.Time
 		COALESCE(MIN(groupname), '') AS groupname,  
 		SUM(visitors) AS visitors, 
 		SUM(pageviews) AS pageviews, 
-		COALESCE(ROUND(SUM(pageviews*NULLIF(bounce_rate, 0)) / SUM(pageviews), 4), 0.00) AS bounce_rate, 
-		COALESCE(ROUND(SUM(avg_duration*pageviews) / SUM(pageviews), 4), 0.00) AS avg_duration 
+		COALESCE(SUM(pageviews*NULLIF(bounce_rate, 0)) / SUM(pageviews), 0.00) AS bounce_rate, 
+		COALESCE(SUM(avg_duration*pageviews) / SUM(pageviews), 0.00) AS avg_duration 
 	FROM daily_referrer_stats 
 	WHERE site_id = ? AND date >= ? AND date <= ? `
 
diff --git a/pkg/datastore/sqlstore/site_stats.go b/pkg/datastore/sqlstore/site_stats.go
index cb0336a..8c5fafb 100644
--- a/pkg/datastore/sqlstore/site_stats.go
+++ b/pkg/datastore/sqlstore/site_stats.go
@@ -29,7 +29,7 @@ func (db *sqlstore) insertSiteStats(s *models.SiteStats) error {
 }
 
 func (db *sqlstore) updateSiteStats(s *models.SiteStats) error {
-	query := db.Rebind(`UPDATE daily_site_stats SET visitors = ?, sessions = ?, pageviews = ?, bounce_rate = ROUND(?, 4), avg_duration = ROUND(?, 4), known_durations = ? WHERE site_id = ? AND date = ?`)
+	query := db.Rebind(`UPDATE daily_site_stats SET visitors = ?, sessions = ?, pageviews = ?, bounce_rate = ?, avg_duration = ?, known_durations = ? WHERE site_id = ? AND date = ?`)
 	_, err := db.Exec(query, s.Visitors, s.Sessions, s.Pageviews, s.BounceRate, s.AvgDuration, s.KnownDurations, s.SiteID, s.Date.Format("2006-01-02"))
 	return err
 }
@@ -48,8 +48,8 @@ func (db *sqlstore) GetAggregatedSiteStats(siteID int64, startDate time.Time, en
 		COALESCE(SUM(pageviews), 0) AS pageviews,
 		COALESCE(SUM(visitors), 0) AS visitors,
 		COALESCE(SUM(sessions), 0) AS sessions,
-		COALESCE(ROUND(SUM(pageviews*avg_duration) / NULLIF(SUM(pageviews), 0), 4), 0.00) AS avg_duration,
-		COALESCE(ROUND(SUM(sessions*bounce_rate) / NULLIF(SUM(sessions), 0), 4), 0.00) AS bounce_rate
+		COALESCE(SUM(pageviews*avg_duration) / NULLIF(SUM(pageviews), 0), 0.00) AS avg_duration,
+		COALESCE(SUM(sessions*bounce_rate) / NULLIF(SUM(sessions), 0), 0.00) AS bounce_rate
 	 FROM daily_site_stats WHERE site_id = ? AND date >= ? AND date <= ? LIMIT 1`)
 	err := db.Get(stats, query, siteID, startDate.Format("2006-01-02"), endDate.Format("2006-01-02"))
 	return stats, mapError(err)
@@ -80,7 +80,7 @@ func (db *sqlstore) GetTotalSiteSessions(siteID int64, startDate time.Time, endD
 }
 
 func (db *sqlstore) GetAverageSiteDuration(siteID int64, startDate time.Time, endDate time.Time) (float64, error) {
-	sql := `SELECT COALESCE(ROUND(SUM(pageviews*avg_duration)/SUM(pageviews), 4), 0.00) FROM daily_site_stats WHERE site_id = ? AND date >= ? AND date <= ?`
+	sql := `SELECT COALESCE(SUM(pageviews*avg_duration)/SUM(pageviews), 0.00) FROM daily_site_stats WHERE site_id = ? AND date >= ? AND date <= ?`
 	query := db.Rebind(sql)
 	var total float64
 	err := db.Get(&total, query, siteID, startDate.Format("2006-01-02"), endDate.Format("2006-01-02"))
@@ -88,7 +88,7 @@ func (db *sqlstore) GetAverageSiteDuration(siteID int64, startDate time.Time, en
 }
 
 func (db *sqlstore) GetAverageSiteBounceRate(siteID int64, startDate time.Time, endDate time.Time) (float64, error) {
-	sql := `SELECT COALESCE(ROUND(SUM(sessions*bounce_rate)/SUM(sessions), 4), 0.00) FROM daily_site_stats WHERE site_id = ? AND date >= ? AND date <= ?`
+	sql := `SELECT COALESCE(SUM(sessions*bounce_rate)/SUM(sessions), 4) FROM daily_site_stats WHERE site_id = ? AND date >= ? AND date <= ?`
 	query := db.Rebind(sql)
 	var total float64
 	err := db.Get(&total, query, siteID, startDate.Format("2006-01-02"), endDate.Format("2006-01-02"))