The following table summarizes segment reporting. The sum of the amounts of the two segments equals the total for the Group in each of the periods.
| Three months ended June 30, | |||||||||
| 2018 | 2017 | ||||||||
| (€ in thousands) | |||||||||
| SYSTEMS | SERVICES | SYSTEMS | SERVICES | ||||||
| Revenues | 1,883 | 3,379 | 2,542 | 2,611 | |||||
| Gross profit | 561 | 1,492 | 925 | 1,185 | |||||
| Gross profit in % | 29.8 | % | 44.2 | % | 36.4 | % | 45.4 | % | |
| Six months ended June 30, | |||||||||
| 2018 | 2017 | ||||||||
| (€ in thousands) | |||||||||
| SYSTEMS | SERVICES | SYSTEMS | SERVICES | ||||||
| Revenues | 3,258 | 7,056 | 4,235 | 5,448 | |||||
| Gross profit | 990 | 3,330 | 1,278 | 2,413 | |||||
| Gross profit in % | 30.4 | % | 47.2 | % | 30.2 | % | 44.3 | % | |
