390 ppm
 
Dec 19
Calcium
ppm
Dec 19 Thu 390
Dec 9 Mon 410
Nov 8 Fri 360
Nov 7 Thu 350
Nov 2 Sat 350
Oct 11 Fri 465
Sep 2 Mon 380
Mar 9 Sat 465
Feb 19 Tue 410
Feb 8 Fri 370
Feb 7 Thu 355
Jan 9 Wed 395
Jan 2 Wed 385
Oct 11 Thu 395
Jun 10 Sun 445
Mar 11 Sun 440
Feb 11 Sun 370
Feb 10 Sat 450
Feb 7 Wed 380
Jan 10 Wed 450
Jan 7 Sun 380