UTC-3:   03   06   09   12   15   18
mdts    264  265  266  267  267  266
mdww    189  339  339  314  277  276
shts    1.2  1.2  1.3  1.3  1.3  1.2
shww    0.3  0.3  0.1  0.0  0.2  0.3