title: Scaling heat map using geom_tile and ggplot
body: <p>I am trying to create a heat map using ggplot. I am using the following code: </p>
  
  <pre><code>ggplot(ff, aes(x=Days, y=variable)) + 
    geom_tile(aes(fill=value),colour="blue") +
    scale_fill_gradient(limits=c(-1,1),low="blue",high="red",na.value="white")
  </code></pre>
  
  <p>Here are my questions: </p>
  
  <ol>
  <li>How do I manipulate the scale unit in geom_tile ( so that instead of creating the heat map every 0.2 it will use a step of every 0.1 or 0.05) </li>
  <li>Is it possible to use a richer color schema that I used ( for example some predefined color schema like in the heatmap function </li>
  <li>There are NA in my dataframe that I render as white. Is there a better way to deal with NA and make it transparent? </li>
  </ol>
  
  <p>The data ff is as follows: </p>
  
  <pre><code>Days    variable            value
  1   4   Short.Range.Days..2 -0.81747353
  
  2   6   Short.Range.Days..2 -0.548692305
  
  3   8   Short.Range.Days..2 -0.344287337
  
  4   10  Short.Range.Days..2 -0.214313697
  
  5   12  Short.Range.Days..2 -0.166991021
  
  6   14  Short.Range.Days..2 -0.087645101
  
  7   16  Short.Range.Days..2 0.003306877
  
  8   18  Short.Range.Days..2 0.014363975
  
  9   20  Short.Range.Days..2 0.022512668
  
  10  22  Short.Range.Days..2 0.040381662
  
  11  24  Short.Range.Days..2 0.062312058
  
  12  26  Short.Range.Days..2 0.079032057
  
  13  28  Short.Range.Days..2 0.062894323
  
  14  30  Short.Range.Days..2 0.042261172
  
  15  32  Short.Range.Days..2 0.032980453
  
  16  34  Short.Range.Days..2 0.040095505
  
  17  36  Short.Range.Days..2 0.039992051
  
  18  38  Short.Range.Days..2 0.006244882
  
  19  40  Short.Range.Days..2 -0.005749414
  
  20  42  Short.Range.Days..2 -0.008062039
  
  21  44  Short.Range.Days..2 -0.023538994
  
  22  46  Short.Range.Days..2 0.000465245
  
  23  48  Short.Range.Days..2 0.011341621
  
  24  50  Short.Range.Days..2 0.031610377
  
  25  52  Short.Range.Days..2 0.043711238
  
  26  54  Short.Range.Days..2 0.052674899
  
  27  56  Short.Range.Days..2 0.052963846
  
  28  58  Short.Range.Days..2 0.042461133
  
  29  60  Short.Range.Days..2 0.041458926
  
  30  4   Short.Range.Days..4 NA
  
  31  6   Short.Range.Days..4 -0.564954032
  
  32  8   Short.Range.Days..4 -0.376387471
  
  33  10  Short.Range.Days..4 -0.212740266
  
  34  12  Short.Range.Days..4 -0.107961718
  
  35  14  Short.Range.Days..4 -0.072863517
  
  36  16  Short.Range.Days..4 -0.013560192
  
  37  18  Short.Range.Days..4 -0.014244693
  
  38  20  Short.Range.Days..4 0.003714455
  
  39  22  Short.Range.Days..4 0.018009887
  
  40  24  Short.Range.Days..4 0.038299314
  
  41  26  Short.Range.Days..4 0.048826919
  
  42  28  Short.Range.Days..4 0.042215816
  
  43  30  Short.Range.Days..4 0.026936439
  
  44  32  Short.Range.Days..4 0.015311212
  
  45  34  Short.Range.Days..4 0.024097239
  
  46  36  Short.Range.Days..4 -0.004329243
  
  47  38  Short.Range.Days..4 -0.001842634
  
  48  40  Short.Range.Days..4 0.000926598
  
  49  42  Short.Range.Days..4 -0.011272775
  
  50  44  Short.Range.Days..4 -0.009693908
  
  51  46  Short.Range.Days..4 -0.001668079
  
  52  48  Short.Range.Days..4 0.016156964
  
  53  50  Short.Range.Days..4 0.042374732
  
  54  52  Short.Range.Days..4 0.046776012
  
  55  54  Short.Range.Days..4 0.045923267
  
  56  56  Short.Range.Days..4 0.050384377
  
  57  58  Short.Range.Days..4 0.045215707
  
  58  60  Short.Range.Days..4 0.047902343
  59  4   Short.Range.Days..6 NA
  
  60  6   Short.Range.Days..6 NA
  
  61  8   Short.Range.Days..6 -0.441329726
  
  62  10  Short.Range.Days..6 -0.238801239
  
  63  12  Short.Range.Days..6 -0.15476164
  
  64  14  Short.Range.Days..6 -0.059414124
  
  65  16  Short.Range.Days..6 -0.061674965
  
  66  18  Short.Range.Days..6 -0.025409294
  
  67  20  Short.Range.Days..6 -0.009152774
  
  68  22  Short.Range.Days..6 -0.001703372
  
  69  24  Short.Range.Days..6 -0.000247112
  
  70  26  Short.Range.Days..6 0.0253183
  
  71  28  Short.Range.Days..6 0.039929109
  
  72  30  Short.Range.Days..6 -0.001386462
  
  73  32  Short.Range.Days..6 0.008182091
  
  74  34  Short.Range.Days..6 0.029240807
  
  75  36  Short.Range.Days..6 -0.002854685
  
  76  38  Short.Range.Days..6 -0.007379733
  
  77  40  Short.Range.Days..6 -0.004630816
  
  78  42  Short.Range.Days..6 -0.011870576
  
  79  44  Short.Range.Days..6 -0.015306308
  
  80  46  Short.Range.Days..6 -0.005366024
  
  81  48  Short.Range.Days..6 0.006607034
  
  82  50  Short.Range.Days..6 0.018644749
  
  83  52  Short.Range.Days..6 0.026165148
  
  84  54  Short.Range.Days..6 0.036606456
  
  85  56  Short.Range.Days..6 0.048953922
  
  86  58  Short.Range.Days..6 0.043359266
  
  87  60  Short.Range.Days..6 0.038203532
  
  88  4   Short.Range.Days..8 NA
  
  89  6   Short.Range.Days..8 NA
  
  90  8   Short.Range.Days..8 NA
  
  91  10  Short.Range.Days..8 -0.381950109
  
  92  12  Short.Range.Days..8 -0.218592498
  
  93  14  Short.Range.Days..8 -0.101448266
  
  94  16  Short.Range.Days..8 -0.046656489
  
  95  18  Short.Range.Days..8 -0.042095639
  
  96  20  Short.Range.Days..8 -0.026922636
  
  97  22  Short.Range.Days..8 -0.015991528
  
  98  24  Short.Range.Days..8 -0.011757444
  
  99  26  Short.Range.Days..8 0.007997248
  
  100 28  Short.Range.Days..8 0.036514373
  
  
  101 30  Short.Range.Days..8 0.006496822
  
  102 32  Short.Range.Days..8 -0.004494976
  
  103 34  Short.Range.Days..8 0.013963243
  
  104 36  Short.Range.Days..8 0.022236117
  
  105 38  Short.Range.Days..8 0.040222229
  
  106 40  Short.Range.Days..8 0.024015061
  
  107 42  Short.Range.Days..8 0.014655371
  
  108 44  Short.Range.Days..8 -0.003435171
  
  109 46  Short.Range.Days..8 0.004921792
  
  110 48  Short.Range.Days..8 0.025002607
  
  111 50  Short.Range.Days..8 0.039823008
  
  112 52  Short.Range.Days..8 0.028497197
  
  113 54  Short.Range.Days..8 0.033465104
  
  114 56  Short.Range.Days..8 0.037187076
  
  115 58  Short.Range.Days..8 0.035133715
  
  116 60  Short.Range.Days..8 0.044956739
  
  117 4   Short.Range.Days..10    NA
  
  118 6   Short.Range.Days..10    NA
  
  119 8   Short.Range.Days..10    NA
  
  120 10  Short.Range.Days..10    NA
  
  121 12  Short.Range.Days..10    -0.315010077
  
  122 14  Short.Range.Days..10    -0.159081521
  
  123 16  Short.Range.Days..10    -0.071303675
  
  124 18  Short.Range.Days..10    -0.084264406
  
  125 20  Short.Range.Days..10    -0.055602557
  
  126 22  Short.Range.Days..10    -0.015130798
  
  127 24  Short.Range.Days..10    0.005610983
  
  128 26  Short.Range.Days..10    0.009360452
  
  129 28  Short.Range.Days..10    0.00674219
  
  130 30  Short.Range.Days..10    0.002157462
  
  131 32  Short.Range.Days..10    0.00349763
  
  132 34  Short.Range.Days..10    -0.001412894
  
  133 36  Short.Range.Days..10    0.003717493
  
  134 38  Short.Range.Days..10    0.002120068
  
  135 40  Short.Range.Days..10    0.006367466
  
  136 42  Short.Range.Days..10    -0.000411258
  
  137 44  Short.Range.Days..10    0.012566411
  
  138 46  Short.Range.Days..10    0.014464965
  
  139 48  Short.Range.Days..10    0.031026233
  
  140 50  Short.Range.Days..10    0.04388952
  
  141 52  Short.Range.Days..10    0.042532374
  
  142 54  Short.Range.Days..10    0.06035085
  
  143 56  Short.Range.Days..10    0.054378445
  
  144 58  Short.Range.Days..10    0.05048477
  
  145 60  Short.Range.Days..10    0.064256151
  
  146 4   Short.Range.Days..12    NA
  
  147 6   Short.Range.Days..12    NA
  
  148 8   Short.Range.Days..12    NA
  
  149 10  Short.Range.Days..12    NA
  
  150 12  Short.Range.Days..12    NA
  
  151 14  Short.Range.Days..12    -0.227372691
  
  152 16  Short.Range.Days..12    -0.156908358
  
  153 18  Short.Range.Days..12    -0.097853165
  
  154 20  Short.Range.Days..12    -0.031213742
  
  155 22  Short.Range.Days..12    -0.002203366
  
  156 24  Short.Range.Days..12    0.027172361
  
  157 26  Short.Range.Days..12    -0.002829266
  
  158 28  Short.Range.Days..12    0.003026913
  
  159 30  Short.Range.Days..12    0.005941515
  
  160 32  Short.Range.Days..12    0.005652349
  
  161 34  Short.Range.Days..12    0.005849875
  
  162 36  Short.Range.Days..12    0.008607215
  
  163 38  Short.Range.Days..12    -0.008046473
  
  164 40  Short.Range.Days..12    -0.003125555
  
  165 42  Short.Range.Days..12    0.018868117
  
  166 44  Short.Range.Days..12    0.017476927
  
  167 46  Short.Range.Days..12    0.011919605
  
  168 48  Short.Range.Days..12    0.021178085
  
  169 50  Short.Range.Days..12    0.041199466
  
  170 52  Short.Range.Days..12    0.034283292
  
  171 54  Short.Range.Days..12    0.029778266
  
  172 56  Short.Range.Days..12    0.039525157
  
  173 58  Short.Range.Days..12    0.046134386
  
  174 60  Short.Range.Days..12    0.065925521
  
  175 4   Short.Range.Days..14    NA
  
  176 6   Short.Range.Days..14    NA
  
  177 8   Short.Range.Days..14    NA
  
  178 10  Short.Range.Days..14    NA
  
  179 12  Short.Range.Days..14    NA
  
  180 14  Short.Range.Days..14    NA
  181 16  Short.Range.Days..14    -0.261691083
  
  182 18  Short.Range.Days..14    -0.142068675
  
  183 20  Short.Range.Days..14    -0.074500031
  
  184 22  Short.Range.Days..14    -0.012082714
  
  185 24  Short.Range.Days..14    0.005659554
  
  186 26  Short.Range.Days..14    0.012468794
  
  187 28  Short.Range.Days..14    -0.002796818
  
  188 30  Short.Range.Days..14    -0.007217387
  
  189 32  Short.Range.Days..14    -0.011216542
  
  190 34  Short.Range.Days..14    -0.012975914
  
  191 36  Short.Range.Days..14    0.001431991
  
  192 38  Short.Range.Days..14    -0.016442151
  
  193 40  Short.Range.Days..14    -0.028879887
  
  194 42  Short.Range.Days..14    -0.008744675
  
  195 44  Short.Range.Days..14    0.003396965
  
  196 46  Short.Range.Days..14    0.006496634
  
  197 48  Short.Range.Days..14    0.034291641
  
  198 50  Short.Range.Days..14    0.037316392
  
  199 52  Short.Range.Days..14    0.025819292
  
  200 54  Short.Range.Days..14    0.017700215
  
  201 56  Short.Range.Days..14    0.030761449
  
  202 58  Short.Range.Days..14    0.042412907
  
  203 60  Short.Range.Days..14    0.064320329
  
  204 4   Short.Range.Days..16    NA
  
  205 6   Short.Range.Days..16    NA
  
  206 8   Short.Range.Days..16    NA
  
  207 10  Short.Range.Days..16    NA
  
  208 12  Short.Range.Days..16    NA
  
  209 14  Short.Range.Days..16    NA
  
  210 16  Short.Range.Days..16    NA
  
  211 18  Short.Range.Days..16    -0.24576188
  
  212 20  Short.Range.Days..16    -0.124836183
  
  213 22  Short.Range.Days..16    -0.048221263
  
  214 24  Short.Range.Days..16    -0.035029068
  
  215 26  Short.Range.Days..16    -0.017987078
  
  216 28  Short.Range.Days..16    -0.008633172
  
  217 30  Short.Range.Days..16    -0.031737817
  
  218 32  Short.Range.Days..16    -0.0329801
  
  219 34  Short.Range.Days..16    -0.022857234
  
  220 36  Short.Range.Days..16    -0.033276605
  
  221 38  Short.Range.Days..16    -0.041135562
  
  222 40  Short.Range.Days..16    -0.040310448
  
  223 42  Short.Range.Days..16    -0.039212637
  
  224 44  Short.Range.Days..16    -0.022545529
  
  225 46  Short.Range.Days..16    -0.003491653
  
  226 48  Short.Range.Days..16    0.019354126
  
  227 50  Short.Range.Days..16    0.01404553
  
  228 52  Short.Range.Days..16    0.009496747
  
  229 54  Short.Range.Days..16    0.021609426
  
  230 56  Short.Range.Days..16    0.053664294
  
  231 58  Short.Range.Days..16    0.034393419
  
  232 60  Short.Range.Days..16    0.051344379
  
  233 4   Short.Range.Days..18    NA
  
  234 6   Short.Range.Days..18    NA
  
  235 8   Short.Range.Days..18    NA
  
  236 10  Short.Range.Days..18    NA
  
  237 12  Short.Range.Days..18    NA
  
  238 14  Short.Range.Days..18    NA
  
  239 16  Short.Range.Days..18    NA
  
  240 18  Short.Range.Days..18    NA
  
  241 20  Short.Range.Days..18    -0.201415281
  
  242 22  Short.Range.Days..18    -0.094650643
  
  243 24  Short.Range.Days..18    -0.050407965
  
  244 26  Short.Range.Days..18    -0.011944599
  
  245 28  Short.Range.Days..18    0.006048385
  
  246 30  Short.Range.Days..18    -0.009465899
  
  247 32  Short.Range.Days..18    -0.010465794
  
  248 34  Short.Range.Days..18    -0.017793544
  
  249 36  Short.Range.Days..18    -0.043409233
  
  250 38  Short.Range.Days..18    -0.047284525
  
  251 40  Short.Range.Days..18    -0.034924265
  
  252 42  Short.Range.Days..18    -0.035220327
  
  253 44  Short.Range.Days..18    -0.038604807
  
  254 46  Short.Range.Days..18    -0.017079637
  
  255 48  Short.Range.Days..18    0.016028302
  
  256 50  Short.Range.Days..18    0.012447745
  
  257 52  Short.Range.Days..18    0.030016509
  
  258 54  Short.Range.Days..18    0.047367639
  
  259 56  Short.Range.Days..18    0.050529707
  
  260 58  Short.Range.Days..18    0.043451669
  
  261 60  Short.Range.Days..18    0.057382559
  
  262 4   Short.Range.Days..20    NA
  
  263 6   Short.Range.Days..20    NA
  
  264 8   Short.Range.Days..20    NA
  
  265 10  Short.Range.Days..20    NA
  
  266 12  Short.Range.Days..20    NA
  
  267 14  Short.Range.Days..20    NA
  
  268 16  Short.Range.Days..20    NA
  
  269 18  Short.Range.Days..20    NA
  
  270 20  Short.Range.Days..20    NA
  
  271 22  Short.Range.Days..20    -0.150659349
  
  272 24  Short.Range.Days..20    -0.087423089
  
  273 26  Short.Range.Days..20    -0.038100588
  
  274 28  Short.Range.Days..20    -0.046059396
  
  275 30  Short.Range.Days..20    -0.049492703
  
  276 32  Short.Range.Days..20    -0.025327689
  
  277 34  Short.Range.Days..20    -0.027303766
  
  278 36  Short.Range.Days..20    -0.029267308
  
  279 38  Short.Range.Days..20    -0.030914711
  
  280 40  Short.Range.Days..20    -0.020236697
  
  281 42  Short.Range.Days..20    -0.020736933
  
  282 44  Short.Range.Days..20    -0.021439136
  
  283 46  Short.Range.Days..20    -0.010624047
  
  284 48  Short.Range.Days..20    0.016708851
  
  285 50  Short.Range.Days..20    0.031313822
  
  286 52  Short.Range.Days..20    0.041814604
  
  287 54  Short.Range.Days..20    0.041267541
  
  288 56  Short.Range.Days..20    0.057323017
  
  289 58  Short.Range.Days..20    0.041221109
  
  290 60  Short.Range.Days..20    0.05872252
  
  291 4   Short.Range.Days..22    NA
  
  292 6   Short.Range.Days..22    NA
  
  293 8   Short.Range.Days..22    NA
  
  294 10  Short.Range.Days..22    NA
  
  295 12  Short.Range.Days..22    NA
  
  296 14  Short.Range.Days..22    NA
  
  297 16  Short.Range.Days..22    NA
  
  298 18  Short.Range.Days..22    NA
  
  299 20  Short.Range.Days..22    NA
  
  300 22  Short.Range.Days..22    NA
  
  301 24  Short.Range.Days..22    -0.15090012
  
  302 26  Short.Range.Days..22    -0.104523303
  
  303 28  Short.Range.Days..22    -0.092845968
  
  304 30  Short.Range.Days..22    -0.083648125
  
  305 32  Short.Range.Days..22    -0.046778288
  
  306 34  Short.Range.Days..22    -0.058309377
  
  307 36  Short.Range.Days..22    -0.045664863
  
  308 38  Short.Range.Days..22    -0.015971201
  
  309 40  Short.Range.Days..22    -0.0296146
  
  310 42  Short.Range.Days..22    -0.013281189
  
  311 44  Short.Range.Days..22    -0.014848272
  
  312 46  Short.Range.Days..22    -0.011940442
  
  313 48  Short.Range.Days..22    0.021530103
  
  314 50  Short.Range.Days..22    0.031175715
  
  315 52  Short.Range.Days..22    0.024433409
  
  316 54  Short.Range.Days..22    0.033544534
  
  317 56  Short.Range.Days..22    0.022443897
  
  318 58  Short.Range.Days..22    0.025883639
  
  319 60  Short.Range.Days..22    0.038383722
  
  320 4   Short.Range.Days..24    NA
  
  321 6   Short.Range.Days..24    NA
  
  322 8   Short.Range.Days..24    NA
  
  323 10  Short.Range.Days..24    NA
  
  324 12  Short.Range.Days..24    NA
  
  325 14  Short.Range.Days..24    NA
  
  326 16  Short.Range.Days..24    NA
  
  327 18  Short.Range.Days..24    NA
  
  328 20  Short.Range.Days..24    NA
  
  329 22  Short.Range.Days..24    NA
  
  330 24  Short.Range.Days..24    NA
  
  331 26  Short.Range.Days..24    -0.219027869
  
  332 28  Short.Range.Days..24    -0.161214748
  
  333 30  Short.Range.Days..24    -0.13408164
  
  334 32  Short.Range.Days..24    -0.08070956
  
  335 34  Short.Range.Days..24    -0.082899097
  
  336 36  Short.Range.Days..24    -0.062595752
  
  337 38  Short.Range.Days..24    -0.024198995
  
  338 40  Short.Range.Days..24    -0.004691925
  
  339 42  Short.Range.Days..24    -0.014496501
  
  340 44  Short.Range.Days..24    -0.022884719
  
  341 46  Short.Range.Days..24    -0.014154586
  
  342 48  Short.Range.Days..24    0.000281776
  
  343 50  Short.Range.Days..24    0.0071921
  
  344 52  Short.Range.Days..24    -0.001297935
  
  345 54  Short.Range.Days..24    -0.0015083
  
  346 56  Short.Range.Days..24    -0.004905885
  
  347 58  Short.Range.Days..24    0.001062168
  
  348 60  Short.Range.Days..24    0.016119001
  
  349 4   Short.Range.Days..26    NA
  
  350 6   Short.Range.Days..26    NA
  
  351 8   Short.Range.Days..26    NA
  
  352 10  Short.Range.Days..26    NA
  
  353 12  Short.Range.Days..26    NA
  
  354 14  Short.Range.Days..26    NA
  
  355 16  Short.Range.Days..26    NA
  
  356 18  Short.Range.Days..26    NA
  
  357 20  Short.Range.Days..26    NA
  
  358 22  Short.Range.Days..26    NA
  
  359 24  Short.Range.Days..26    NA
  
  360 26  Short.Range.Days..26    NA
  
  361 28  Short.Range.Days..26    -0.243817468
  
  362 30  Short.Range.Days..26    -0.175056647
  
  363 32  Short.Range.Days..26    -0.118290191
  
  364 34  Short.Range.Days..26    -0.077769693
  
  365 36  Short.Range.Days..26    -0.026417708
  
  366 38  Short.Range.Days..26    -0.016489546
  
  367 40  Short.Range.Days..26    -0.012463804
  
  368 42  Short.Range.Days..26    -0.008863066
  
  369 44  Short.Range.Days..26    -0.017249374
  
  370 46  Short.Range.Days..26    -0.016538643
  
  371 48  Short.Range.Days..26    -0.004546857
  
  372 50  Short.Range.Days..26    -0.003654304
  
  373 52  Short.Range.Days..26    -0.002765445
  
  374 54  Short.Range.Days..26    -0.003328998
  
  375 56  Short.Range.Days..26    -0.00821013
  
  376 58  Short.Range.Days..26    0.002902259
  
  377 60  Short.Range.Days..26    0.005409932
  378 4   Short.Range.Days..28    NA
  
  379 6   Short.Range.Days..28    NA
  
  380 8   Short.Range.Days..28    NA
  
  381 10  Short.Range.Days..28    NA
  
  382 12  Short.Range.Days..28    NA
  
  383 14  Short.Range.Days..28    NA
  
  384 16  Short.Range.Days..28    NA
  
  385 18  Short.Range.Days..28    NA
  
  386 20  Short.Range.Days..28    NA
  
  387 22  Short.Range.Days..28    NA
  
  388 24  Short.Range.Days..28    NA
  
  389 26  Short.Range.Days..28    NA
  
  390 28  Short.Range.Days..28    NA
  
  391 30  Short.Range.Days..28    -0.2017481
  
  392 32  Short.Range.Days..28    -0.134879691
  
  393 34  Short.Range.Days..28    -0.062318376
  
  394 36  Short.Range.Days..28    -0.034419214
  
  395 38  Short.Range.Days..28    -0.017322394
  
  396 40  Short.Range.Days..28    -0.029575546
  
  397 42  Short.Range.Days..28    -0.023687556
  
  398 44  Short.Range.Days..28    -0.012397918
  
  399 46  Short.Range.Days..28    -0.009062897
  
  400 48  Short.Range.Days..28    -0.011838491
  
  401 50  Short.Range.Days..28    -0.012319173
  
  402 52  Short.Range.Days..28    -0.00739976
  
  403 54  Short.Range.Days..28    -0.009963764
  
  404 56  Short.Range.Days..28    -0.013427471
  
  405 58  Short.Range.Days..28    -0.016496869
  
  406 60  Short.Range.Days..28    -0.007558199
  
  407 4   Short.Range.Days..30    NA
  
  408 6   Short.Range.Days..30    NA
  
  409 8   Short.Range.Days..30    NA
  
  410 10  Short.Range.Days..30    NA
  
  411 12  Short.Range.Days..30    NA
  
  412 14  Short.Range.Days..30    NA
  
  413 16  Short.Range.Days..30    NA
  
  414 18  Short.Range.Days..30    NA
  
  415 20  Short.Range.Days..30    NA
  
  416 22  Short.Range.Days..30    NA
  
  417 24  Short.Range.Days..30    NA
  
  418 26  Short.Range.Days..30    NA
  
  419 28  Short.Range.Days..30    NA
  
  420 30  Short.Range.Days..30    NA
  
  421 32  Short.Range.Days..30    -0.181026029
  
  422 34  Short.Range.Days..30    -0.089303464
  
  423 36  Short.Range.Days..30    -0.04590373
  
  424 38  Short.Range.Days..30    -0.048539444
  
  425 40  Short.Range.Days..30    -0.053611014
  
  426 42  Short.Range.Days..30    -0.029848611
  
  427 44  Short.Range.Days..30    -0.038913148
  
  428 46  Short.Range.Days..30    -0.035174622
  
  429 48  Short.Range.Days..30    -0.025815231
  
  430 50  Short.Range.Days..30    -0.025238126
  
  431 52  Short.Range.Days..30    -0.019484408
  
  432 54  Short.Range.Days..30    -0.026327212
  
  433 56  Short.Range.Days..30    -0.027493418
  
  434 58  Short.Range.Days..30    -0.036467761
  
  435 60  Short.Range.Days..30    0.003688413
  </code></pre>