UTC-3:   03   06   09   12   15   18   21   24
mdts    254  255  257  257  257  255  253  226
mdww    101   96   97  107  112  114  116  120
shts    0.9  1.0  1.0  1.0  0.9  0.9  0.8  1.0
shww    0.6  0.5  0.5  0.8  1.3  1.6  1.4  0.7