Bug fixes for Calibration

#version=V2021.3.12.444
#message={
Release Note:
[1] Bug fix for Calibration data timestamp display
[2] Bug fix for Map COLUMN_DIR display
[3] Bug fix for system variable display in graphics
}
#url1=http://www.tosun.tech/TOSUNSoftware/TSMaster_Setup_beta.exe
#method=1