UTC-3:   03   06   09   12   15   18   21   24
mdts    256  255  255  254  254  254  254  255
mdww    319  316  303  339  347   10   15   76
shts    0.8  0.8  0.7  0.7  0.7  0.7  0.6  0.6
shww    0.0  0.0  0.0  0.0  0.0  0.0  0.0  0.2