| Exp. | Operator | Min | Max | Median | Range | Mean | Variance | SD | CV |
| 1. | Halotel | −69.0 | −59.7 | 25 | −10 | −63.7 | 1.1323 | 1.064108 | 4.32 |
| Tigo | −89.2 | −49.2 | 31.9 | −40 | −50.3 | 10.926 | 3.30551 | 10.55 | |
| Vodacom | −73 | −63.1 | 23 | −10 | −67.1 | 1.2189 | 1.104055 | 4.81 | |
| Airtel | −75 | −57.7 | 26.3 | −17.3 | −60.4 | 1.4658 | 1.210702 | 4.60 | |
| 2. | Halotel | −82.0 | −53.0 | 29 | −29 | −56.2 | 0.8933 | 0.945119 | 3.33 |
| Tigo | −91.2 | −85.2 | 12.9 | −6 | −87.2 | 0.6317 | 0.794781 | 6.15 | |
| Vodacom | −73.0 | −63.0 | 23 | −10 | −67.0 | 1.1985 | 1.094746 | 4.76 | |
| Airtel | −79.4 | −67.7 | 21.3 | −11.7 | −70.1 | 0.3559 | 0.596536 | 2.78 | |
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