$\text{Am-timan}:H=3.6080\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{Mongo}:H=3.7637\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{Sarh}:H=3.6497\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{Pala}:H=3.5344\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{N}’\text{Djamena}:H=3.7575\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{Faya-Largeau}:H=3.6463\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{Abeche}:H=3.8466\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{Ati}:H=3.7346\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{Bongor}:H=3.7742\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{Moundou}:H=3.5982\ast 10\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{Moussoro}:H=3.6668\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$

$\text{Bokoro}:H=3.7893\ast {10}^3\ast \exp \phi \left(\frac{S}{S_0}-\frac{H{R}^{1/3}}{100}-\frac{1}{T_{\max }}\right)$