UTC-3:   03   06   09   12   15   18   21   24
mdts    271  264  255  256  257  258  260  263
mdww    257  255  271  269  276  280  284  288
shts    1.4  1.6  2.0  1.7  1.7  1.6  1.7  1.8
shww    1.5  2.0  1.1  1.2  1.0  1.0  0.9  0.8