UTC-3:   03   06   09   12   15   18   21   24
mdts    272  259  255  255  256  258  260  263
mdww    255  254  273  270  276  280  284  290
shts    1.4  1.7  2.0  1.7  1.6  1.6  1.6  1.7
shww    1.7  1.9  1.0  1.1  1.1  1.0  1.0  0.8