Chart for use with the Slope Method
Values of P t / EC for Values of µ
µ
0
0.40
0.6432
0.6431
0.41
0.6418
0.6417
0.42
0.6404
0.6403
0.43
0.639
0.6388
0.44
0.6375
0.6374
0.45
0.6361
0.6359
0.46
0.6346
0.6345
0.47
0.6332
0.633
0.48
0.6317
0.6316
0.49
0.6303
0.6301
0.50
0.6288
0.6286
0.51
0.6273
0.6271
0.52
0.6258
0.6257
0.53
0.6243
0.6242
0.54
0.6228
0.6226
0.55
0.6213
0.6211
0.56
0.6198
0.6196
0.57
0.6182
0.6181
0.58
0.6167
0.6165
0.59
0.6151
0.615
0.60
0.6136
0.6134
0.61
0.612
0.6118
0.62
0.6104
0.6103
0.63
0.6088
0.6087
1
2
3
0.6429
0.6428
0.6415
0.6414
0.6401
0.64
0.6387
0.6385
0.6372
0.6371
0.6358
0.6357
0.6344
0.6342
0.6329
0.6328
0.6314
0.6313
0.63
0.6298
0.6285
0.6283
0.627
0.6268
0.6255
0.6254
0.624
0.6239
0.6225
0.6223
0.621
0.6208
0.6194
0.6193
0.6179
0.6178
0.6164
0.6162
0.6148
0.6147
0.6133
0.6131
0.6117
0.6115
0.6101
0.6099
0.6085
0.6084
4
5
6
0.6427
0.6425
0.6424
0.6412
0.6411
0.641
0.6398
0.6397
0.6395
0.6384
0.6383
0.6381
0.637
0.6368
0.6367
0.6355
0.6354
0.6352
0.6341
0.6339
0.6338
0.6326
0.6325
0.6323
0.6311
0.631
0.6308
0.6297
0.6295
0.6294
0.6282
0.628
0.6279
0.6267
0.6266
0.6264
0.6252
0.6251
0.6249
0.6237
0.6235
0.6234
0.6222
0.622
0.6219
0.6207
0.6205
0.6204
0.6191
0.619
0.6188
0.6176
0.6174
0.6173
0.6161
0.6159
0.6157
0.6145
0.6143
0.6142
0.6129
0.6128
0.6126
0.6114
0.6112
0.6111
0.6098
0.6096
0.6095
0.6082
0.608
0.6079
7
8
9
0.6422
0.6421
0.642
0.6408
0.6407
0.6405
0.6394
0.6393
0.6391
0.638
0.6378
0.6377
0.6365
0.6364
0.6362
0.6351
0.6349
0.6348
0.6336
0.6335
0.6333
0.6322
0.632
0.6319
0.6307
0.6306
0.6304
0.6292
0.6291
0.6289
0.6277
0.6276
0.6274
0.6263
0.6261
0.626
0.6248
0.6246
0.6245
0.6232
0.6231
0.6229
0.6217
0.6216
0.6214
0.6202
0.6201
0.6199
0.6187
0.6185
0.6184
0.6171
0.617
0.6168
0.6156
0.6154
0.6153
0.614
0.6139
0.6137
0.6125
0.6123
0.6122
0.6109
0.6107
0.6106
0.6093
0.6092
0.609
0.6077
0.6076
0.6074
35