UTC-3:   03   06   09   12   15   18   21   24
mdts    256  255  251  250  251  251  254  255
mdww    274  264  266  275  290  289  251  242
shts    1.3  1.3  1.3  1.3  1.3  1.2  1.1  1.0
shww    0.4  0.4  0.5  0.5  0.3  0.4  0.7  1.2