======+=============================================================================+====== _t_ | Difference between the dry and wet thermometers (_t-t′_). | _t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ (Dry ther.)| 6°.0| 6°.5| 7°.0| 7°.5| 8°.0| 8°.5| 9°.0| 9°.5|10°.0|10°.5|11°.0|11°.5|12°.0|ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 19 | -25 | | | | | | | | | | | | | 19 | | | | | | | | | | | | | | 20 | -19 | -32 | | | | | | | | | | | | 20 21 | -15 | -24 | -47 | | | | | | | | | | | 21 22 | -11 | -19 | -31 | | | | | | | | | | | 22 23 | -8 | -14 | -24 | -45 | | | | | | | | | | 23 24 | -5 | -10 | -18 | -30 | | | | | | | | | | 24 | | | | | | | | | | | | | | 25 | -2 | -7 | -13 | -22 | -42 | | | | | | | | | 25 26 | 0 | -4 | -9 | -17 | -28 | | | | | | | | | 26 27 | +3 | -1 | -6 | -12 | -20 | -37 | | | | | | | | 27 28 | 5 | +1 | -3 | -8 | -15 | -25 | -54 | | | | | | | 28 29 | 7 | 4 | 0 | -4 | -10 | -18 | -32 | | | | | | | 29 | | | | | | | | | | | | | | 30 | 9 | 6 | +2 | -2 | -6 | -13 | -22 | -43 | | | | | | 30 31 | 11 | 8 | 5 | +1 | -3 | -8 | -15 | -27 | | | | | | 31 32 | 13 | 10 | 7 | 4 | 0 | -4 | -10 | -18 | -33 | | | | | 32 33 | 14 | 12 | 9 | 6 | +3 | -1 | -6 | -12 | -22 | -44 | | | | 33 34 | 16 | 14 | 11 | 8 | 6 | +2 | -2 | -8 | -15 | -27 | | | | 34 | | | | | | | | | | | | | | 35 | 18 | 15 | 13 | 10 | 8 | 5 | +1 | -4 | -9 | -18 | -32 | | | 35 36 | 19 | 17 | 15 | 12 | 10 | 8 | 4 | 0 | -5 | -12 | -20 | -42 | | 36 37 | 21 | 19 | 17 | 14 | 12 | 9 | 6 | +3 | -2 | -6 | -14 | -25 | -52 | 37 38 | 22 | 20 | 19 | 16 | 14 | 11 | 9 | 6 | +2 | -2 | -8 | -16 | -29 | 38 39 | 24 | 22 | 20 | 18 | 16 | 14 | 11 | 8 | 5 | +1 | -4 | -10 | -18 | 39 | | | | | | | | | | | | | | 40 | 25 | 23 | 22 | 20 | 18 | 16 | 13 | 11 | 8 | 4 | 0 | -5 | -12 | 40