UTC-3:   03   06   09   12   15   18   21   24
mdts    253  256  257  256  254  244  239  238
mdww    228  231  231  231  233  237  243  247
shts    1.5  1.6  1.5  1.5  1.4  1.5  1.7  1.7
shww    0.7  1.2  1.6  1.8  1.8  1.7  1.3  1.0