UTC-3:   03   06   09   12   15   18   21   24
mdts    263  263  263  262  262  261  261  261
mdww    281  283  287  285  289  287  298  322
shts    2.7  2.7  2.6  2.5  2.5  2.4  2.4  2.4
shww    0.8  0.7  0.6  0.7  0.6  0.6  0.4  0.3