la all control points (in the first phase the accessory tie-points) 
ib the four corner points of the block (1, 15, 106, 1209) 
lc all four tie-points of model 7 
ld all four tie-points of model 14 
le all four tie-points of model 49. 
experiment 2 
block used: see figure 3 
distribution of tie-points: 6 per model (see chapter 3.1) 
number of tie-points: 225 
number of control points: 30 
distribution of control points: see figure 3 
chosen partial networks: 
2a all control points (in the first phase the accessory points) 
2b the four corner points of the block (1, 15, 211, 225) 
2c all six tie-points of model 7 
2d all six tie-points of model 14 
2e all six tie-points of model 49. 
experiment 3 
block used: see figure 4 
distribution of tie-points: see experiment 2 
number of tie-points: 231 
number of control points: 30 
distribution of control points: see figure 4 
chosen partial networks: 
3a all control points 
3b all six tie-points of model 10 
3c all six tie-points of model 20 
Jd partial network consisting of the points 115, 116, 136, 137 
157 and 158 
> 
experiment 4 
block used: see figure 5 
distribution of tie-points: see experiment 2 
number of tie-points: 241 
number of control points: see figure 5 
chosen partial networks 
4a all control points 
4b all tie-points of model 7* 
4c all tie-points of models 78, 79, 80, 98, 99, 100 
4d partial network consisting of the points 157, 158, 178, 
179, 199, 200: 
experiment 5 . 
analogous to experiment 4 with exception of number and distribution 
of control points (see figure 6). 
* point numbers and model number refer to the original block of 7 
strips and 20 models per strip from which the irregular block is 
derived. 
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