UTC-3:   03   06   09   12   15   18   21   24
mdts    258  257  257  256  256  256  256  256
mdww    280  274  276  310  201   21   27  298
shts    1.6  1.5  1.5  1.5  1.5  1.5  1.4  1.3
shww    0.4  0.4  0.3  0.1  0.0  0.0  0.0  0.1