| Spread | K | Beisser (1999) | Gentle (1993) | Ju (2002) | Caldana et al. (2016) | EBS | MC | S.E. |
| 50 | 50 | 54.16 | 51.99 | 54.31 | 54.16 | 54.16 | 54.28 | 0.0383 |
|
|
| −0.22% | −4.22% | 0.06% | −0.22% | −0.22% |
|
|
| 40 | 60 | 47.27 | 44.43 | 47.48 | 47.27 | 47.27 | 47.45 | 0.0375 |
|
|
| −0.38% | −6.36% | 0.06% | −0.38% | −0.38% |
|
|
| 30 | 70 | 41.26 | 37.93 | 41.52 | 41.26 | 41.26 | 41.50 | 0.0369 |
|
|
| −0.58% | −8.60% | 0.05% | −0.58% | −0.58% |
|
|
| 20 | 80 | 36.04 | 32.40 | 36.36 | 36.04 | 36.04 | 36.52 | 0.0363 |
|
|
| −1.31% | −11.28% | −0.44% | −1.31% | −1.31% |
|
|
| 10 | 90 | 31.53 | 27.73 | 31.88 | 31.53 | 31.53 | 31.85 | 0.0356 |
|
|
| −1.00% | −12.94% | 0.09% | −1.00% | −1.00% |
|
|
| 0 | 100 | 27.63 | 23.78 | 28.01 | 27.63 | 27.63 | 27.98 | 0.0350 |
|
|
| −1.25% | −15.01% | 0.11% | −1.25% | −1.25% |
|
|
| −10 | 110 | 24.27 | 20.46 | 24.67 | 24.27 | 24.27 | 24.63 | 0.0344 |
|
|
| −1.46% | −16.93% | 0.16% | −1.46% | −1.46% |
|
|
| −20 | 120 | 21.36 | 17.65 | 21.77 | 21.36 | 21.36 | 21.74 | 0.0338 |
|
|
| −1.75% | −18.81% | 0.14% | −1.75% | −1.75% |
|
|
| −30 | 130 | 18.84 | 15.27 | 19.26 | 18.84 | 18.84 | 19.22 | 0.0332 |
|
|
| −1.98% | −20.55% | 0.21% | −1.98% | −1.98% |
|
|
| −40 | 140 | 16.65 | 13.25 | 17.07 | 16.65 | 16.65 | 17.05 | 0.0326 |
|
|
| −2.35% | −22.29% | 0.12% | −2.35% | −2.35% |
|
|
| −50 | 150 | 14.75 | 11.53 | 15.17 | 14.75 | 14.75 | 15.15 | 0.0320 |
|
|
| −2.64% | −23.89% | 0.13% | −2.64% | −2.64% |
|
|