simplify the query to execute in less time

declare @month int
declare @year int
set @month=8
set @year =2014
 
CREATE TABLE #TMP_Avg_Stats
(
dt as datetime,
alumina as numeric(10,2),
caustic as numeric(10,2),
ratio as numeric(10,2),
fsfalumina as numeric(10,2),
fsfcaustic as numeric(10,2),
fsfratio as numeric(10,2),
nt_6o as numeric(10,2),
nt_6u as numeric(10,2),
nt_6_density as numeric(10,2),
nt_6_solid as numeric(10,2),
sodagpldms1 as numeric(10,2),
soliddms1 as numeric(10,2),
mudmgpldms2 as numeric(10,2),
sodagplpfdms2 as numeric(10,2),
solidpfdms2 as numeric(10,2),
gplsodae1 as numeric(10,2),
phe1 as numeric(10,2),
nt_2s3 as numeric(10,2),
pglmudp1 as numeric(10,2),
ofmgplp2 as numeric(10,2),
densityp3 as numeric(10,2),
solidp3 as numeric(10,2),
hrddensityh1 as numeric(10,2),
hrdsolidh1 as numeric(10,2),
ufdensityh1 as numeric(10,2),
ufsolidh1 as numeric(10,2),
mudp4 as numeric(10,2),
ntu1density as numeric(10,2),
ntu1soda as numeric(10,2),
ntu1solid  as numeric(10,2),
ntu2density as numeric(10,2),
ntu2soda as numeric(10,2),
ntu2solid as numeric(10,2),
ntu3density as numeric(10,2),
ntu3soda as numeric(10,2),
ntu3solid as numeric(10,2),
ntu4density as numeric(10,2),
ntu4soda as numeric(10,2),
ntu4solid as numeric(10,2),
ntu5density as numeric(10,2),
ntu5soda as numeric(10,2),
ntu5solid as numeric(10,2),
ntu6density as numeric(10,2),
ntu6soda as numeric(10,2),
ntu6solid as numeric(10,2),
nto1soda as numeric(10,2),
nto2soda as numeric(10,2),
nto3soda as numeric(10,2),
nto4soda as numeric(10,2),
nto5soda as numeric(10,2),
nto6soda as numeric(10,2)
)


INSERT INTO #TMP_Avg_Stats
SELECT CONVERT(varchar,s1.edatetime,103) as [date], AVG(s1.alumina) as alumina,AVG(s1.caustic),AVG(s1.ratio) as ratio, 
from caustic_batch_tank s1 where s1.edatetime>='2014-08-01' 


UPDATE #TMP_Avg_Stats SET fsfalumina=AVG(s2.alumina), fsfcaustic=AVG(s2.caustic),fsfratio=AVG(s2.ratio) 
FROM caustic_batch_tank_fsf s2 WHERE s2.edatetime >= '2014-08-01'

UPDATE #TMP_Avg_Stats SET nt_6o=AVG(l1.nt_6o) , nt_6u= AVG(l1.nt_6u)
FROM last_wash_gpl_soda l1 WHERE l1.edatetime>='2014-08-01'

UPDATE #TMP_Avg_Stats SET nt_6_density=AVG(l2.density),nt_6_solid=AVG(l2.solid)
FROM last_wash_nt_6 l2 WHERE l2.edatetime>='2014-08-01' 

UPDATE #TMP_Avg_Stats SET sodagpldms1 = AVG(d1.sodagpldms), soliddms1=AVG(d1.soliddms) 
dms1 d1  WHERE d1.edatetime>='2014-08-01'

UPDATE #TMP_Avg_Stats SET mudmgpldms2 =AVG(d2.mudmgpl) , sodagplpfdms2= AVG(d2.sodagplpf) , solidpfdms2=AVG(d2.solidpf)
FROM dms2 d2 WHERE d2.edatetime>='2014-08-01'

UPDATE #TMP_Avg_Stats SET gplsodae1=AVG(e1.gpl_soda), phe1=avg(e1.ph)
FROM evaporator_cooling_tower  e1 WHERE e1.edatetime>='2014-08-01'

UPDATE #TMP_Avg_Stats SET nt_2s3 =AVG(s3.nt_2) 
FROM suspended_mud   s3 WHERE s3.edatetime>='2014-08-01'

UPDATE #TMP_Avg_Stats SET pglmudp1=AVG(p1.pglmud)
FROM pgl_tank_mgpl_mud   p1 WHERE p1.edatetime>='2014-08-01'

UPDATE #TMP_Avg_Stats SET ofmgplp2=AVG(p2.ofmgpl) 
FROM pd_tank   p2 WHERE (p2.edatetime>='2014-08-01' and p2.valstatus='Not Mud')

UPDATE #TMP_Avg_Stats SET densityp3=AVG(p3.density), solidp3=AVG(p3.solid)
FROM pd_tank2   p3 WHERE p3.edatetime>='2014-08-01'


UPDATE #TMP_Avg_Stats SET hrddensityh1=AVG(h1.hrddensity),hrdsolidh1=AVG(h1.hrdsolid),
ufdensityh1=AVG(h1.ufdensity),ufsolidh1 = AVG(h1.ufsolid)
FROM hrd_feed   h1
WHERE h1.edatetime>='2014-08-01'



UPDATE #TMP_Avg_Stats SET
AVG(p4.mud) as mudp4,
FROM pfmud   p4
WHERE p4.edatetime>='2014-08-01'


UPDATE #TMP_Avg_Stats SET
AVG(tu1.density) as ntu1density,
AVG(tu1.soda) as ntu1so	da,
AVG(tu1.solid) as ntu1solid,
FROM thickeners_u   tu1
WHERE (tu1.edatetime>='2014-08-01' and tu1.sample='NT - 1')



UPDATE #TMP_Avg_Stats SET
AVG(tu2.density) as ntu2density,
AVG(tu2.soda) as ntu2soda,
AVG(tu2.solid) as ntu2solid,
FROM thickeners_u   tu2
WHERE (tu2.edatetime>='2014-08-01' and tu2.sample='NT - 2')


UPDATE #TMP_Avg_Stats SET
AVG(tu3.density) as ntu3density,
AVG(tu3.soda) as ntu3soda,
AVG(tu3.solid) as ntu3solid,
FROM thickeners_u   tu3
WHERE (tu3.edatetime>='2014-08-01' and tu3.sample='NT - 3')


UPDATE #TMP_Avg_Stats SET
AVG(tu4.density) as ntu4density,
AVG(tu4.soda) as ntu4soda,
AVG(tu4.solid) as ntu4solid,
FROM thickeners_u   tu4
WHERE (tu4.edatetime>='2014-08-01' and tu4.sample='NT - 4')

UPDATE #TMP_Avg_Stats SET
AVG(tu5.density) as ntu5density,
AVG(tu5.soda) as ntu5soda,
AVG(tu5.solid) as ntu5solid,
FROM thickeners_u   tu5
WHERE (tu5.edatetime>='2014-08-01' and tu5.sample='NT - 5')



UPDATE #TMP_Avg_Stats SET ntu6density=AVG(tu6.density),
ntu6soda=AVG(tu6.soda),
ntu6solid=AVG(tu6.solid)
FROM thickeners_u   tu6
WHERE (tu6.edatetime>='2014-08-01' and tu6.sample='NT - 6')


UPDATE #TMP_Avg_Stats SET nto1soda=AVG(to1.soda) 
FROM thickeners_o   to1
WHERE (to1.edatetime>='2014-08-01' and to1.sample='NT - 1')



UPDATE #TMP_Avg_Stats SET nto2soda=AVG(to2.soda) 
FROM thickeners_o   to2 WHERE (to2.edatetime>='2014-08-01' and to2.sample='NT - 2')


UPDATE #TMP_Avg_Stats SET nto3soda=AVG(to3.soda) 
FROM thickeners_o   to3 WHERE (to3.edatetime>='2014-08-01' and to3.sample='NT - 3')


UPDATE #TMP_Avg_Stats SET nto4soda=AVG(to4.soda)
FROM thickeners_o   to4
WHERE (to4.edatetime>='2014-08-01' and to4.sample='NT - 4')


UPDATE #TMP_Avg_Stats SET nto5soda=AVG(to5.soda) 
FROM thickeners_o   to5 WHERE (to5.edatetime>='2014-08-01' and to5.sample='NT - 5')


UPDATE #TMP_Avg_Stats SET nto6soda=AVG(to6.soda)
FROM thickeners_o   to6 WHERE (to6.edatetime>='2014-08-01' and to6.sample='NT - 6')
 
 SELECT * FROM #TMP_Avg_Stats