Trough-shaped profile

Use a decimal point or comma for fractional quantities.

Use a decimal point or comma for fractional quantities.

Use a decimal point or comma for fractional quantities.

Use a decimal point or comma for fractional quantities.

Use a decimal point or comma for fractional quantities.

Use a decimal point or comma for fractional quantities.

Use a decimal point or comma for fractional quantities.

Use a decimal point or comma for fractional quantities.

Use a decimal point or comma for fractional quantities.

Use a decimal point or comma for fractional quantities.