UTC-3:   03   06   09   12   15   18   21   24
mdts    255  257  258  258  257  257  256  255
mdww    317  261  252  254  258  271  276  317
shts    1.6  1.7  1.8  1.9  2.0  2.0  1.9  1.9
shww    0.0  0.3  0.5  0.3  0.3  0.2  0.2  0.0