7 Egyptian schools:

| Alexandria | Aswan | Bani Swif | El Behira | El Gharbiya | El Mansura | El Senbellawein |

5 eTwinning schools:

| Aigio | Busteni | Ilion | Lafrançaise | Irbid |

7 American  schools:

| Rio de Janeiro CENOM | Guarne | Alta Gracia | Chivilcoy | Rio de Janeiro Méier | Santarém | Bayamón |

Our measurements carried out between June 14 and 18 have only a small difference compared to that of June 21 and will remain valid for the calculations.