UTC-3:   03   06   09   12   15   18   21   24
mdts    250  253  255  255  257  256  259  261
mdww    279  298  336  339  332  302  288  292
shts    1.1  1.2  1.4  1.6  1.7  1.7  1.9  2.1
shww    0.6  0.4  0.4  0.6  0.8  1.0  1.1  0.8