Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_67 (t__µm_ VARCHAR, technology VARCHAR)
### Question:
What is the total number of t (µm), when Technology is u c-si?
### Answer:
SELECT COUNT(t__µm_) FROM table_name_67 WHERE technology = "u c-si"