UTC-3:   03   06   09   12   15   18   21   24
mdts    251  252  254  256  258  260  263  264
mdww    246  273  268  283  296  315  319  309
shts    1.6  1.6  1.4  1.3  1.2  1.1  1.1  1.0
shww    0.3  0.1  0.3  0.1  0.1  0.0  0.0  0.1