From a02ea3da769f5d77cd0e6d572f078ca28f3c6a7c Mon Sep 17 00:00:00 2001
From: Andrea Mazzoleni <amadvance@gmail.com>
Date: Wed, 28 Jan 2015 19:36:45 +0100
Subject: [PATCH] Use the midpoint from Backblaze stats

---
 cmdline/device.c | 68 ++++++++++++++++++++++++++----------------------
 1 file changed, 37 insertions(+), 31 deletions(-)

diff --git a/cmdline/device.c b/cmdline/device.c
index 1bef7933..e8c36465 100644
--- a/cmdline/device.c
+++ b/cmdline/device.c
@@ -32,65 +32,71 @@ struct afr_point {
 	double afr; /**< Annual Failure Rate at this value. */
 };
 
+/* Smart 5: Reallocated_Sector_Ct (Raw Value) */
 static struct afr_point AFR_5[] = {
 	{ 0, 0 },
-	{ 1, 0.0274 },
-	{ 4, 0.0750 },
-	{ 16, 0.235 },
-	{ 70, 0.361 },
-	{ 260, 0.567 },
-	{ 1100, 1.50 },
-	{ 4500, 2.06 },
-	{ 17000, 1.77 },
+	{ (1+4)/2, 0.0274 },
+	{ (4+16)/2, 0.0750 },
+	{ (16+70)/2, 0.235 },
+	{ (70+260)/2, 0.361 },
+	{ (260+1100)/2, 0.567 },
+	{ (1100+4500)/2, 1.50 },
+	{ (4500+17000)/2, 2.06 },
+	{ (17000+70000)/2, 1.77 },
 	{ 0, 0 }
 };
 
+/* Smart 187: Reported_Uncorrect (Raw Value) */
 static struct afr_point AFR_187[] = {
 	{ 0, 0 },
 	{ 1, 0.338 },
-	{ 3, 0.501 },
-	{ 11, 0.534 },
-	{ 20, 0.842 },
-	{ 35, 1.44 },
-	{ 65, 1.61 },
+	{ (3+6)/2, 0.501 },
+	{ (11+20)/2, 0.534 },
+	{ (20+35)/2, 0.842 },
+	{ (35+65)/2, 1.44 },
+	{ (65+120)/2, 1.61 },
 	{ 0, 0 }
 };
 
+/* Smart 188: Command_Timeout (Raw Value) */
 static struct afr_point AFR_188[] = {
 	{ 0, 0 },
-	{ 1, 0.100 },
-	{ 13000000000ULL, 0.334 },
-	{ 26000000000ULL, 0.367 },
+	{ (1+13000000000ULL)/2, 0.100 },
+	{ (13000000000ULL+26000000000ULL)/2, 0.334 },
+	{ (26000000000ULL+104000000000ULL)/2, 0.367 },
 	{ 0, 0 }
 };
 
+/* Smart 193: Load_Cycle_Count (Raw Value) */
 static struct afr_point AFR_193[] = {
 	{ 0, 0 },
-	{ 1300, 0.0248 },
-	{ 5500, 0.0585 },
-	{ 21000, 0.195 },
-	{ 90000, 0.267 },
+	{ (1300+5500)/2, 0.0248 },
+	{ (5500+21000)/2, 0.0585 },
+	{ (21000+90000)/2, 0.195 },
+	{ (90000+350000)/2, 0.267 },
 	{ 0, 0 }
 };
 
+/* Smart 197: Current_Pending_Sector (Raw Value) */
 static struct afr_point AFR_197[] = {
 	{ 0, 0 },
-	{ 1, 0.341 },
-	{ 2, 0.682 },
-	{ 16, 0.956 },
-	{ 40, 1.65 },
-	{ 100, 2.51 },
-	{ 250, 3.32 },
+	{ (1+2)/2, 0.341 },
+	{ (2+6)/2, 0.682 },
+	{ (16+40)/2, 0.956 },
+	{ (40+100)/2, 1.65 },
+	{ (100+250)/2, 2.51 },
+	{ (250+650)/2, 3.32 },
 	{ 0, 0 }
 };
 
+/* Smart 198: Offline_Uncorrectable (Raw Value) */
 static struct afr_point AFR_198[] = {
 	{ 0, 0 },
-	{ 1, 0.813 },
-	{ 2, 1.11 },
-	{ 4, 1.35 },
-	{ 10, 1.74 },
-	{ 12, 2.64 },
+	{ (1+2)/2, 0.813 },
+	{ (2+4)/2, 1.11 },
+	{ (4+6)/2, 1.35 },
+	{ (10+12)/2, 1.74 },
+	{ (12+14)/2, 2.64 },
 	{ 0, 0 }
 };