Properties of long light filaments in natural environment<xref rid="cpb_27_8_085203fn1" ref-type="fn">*</xref> <fn id="cpb_27_8_085203fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11574387, 11404335, 11474002, and 11535001), the National Basic Research Program of China (Grant Nos. 2013CBA01501 and 2013CB922401), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grants Nos. XDB16010200 and XDB07030300), and the Science Challenge Project, China (Grant No. TZ2016005).</p></fn>

Properties of long light filaments in natural environment* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 11574387, 11404335, 11474002, and 11535001), the National Basic Research Program of China (Grant Nos. 2013CBA01501 and 2013CB922401), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grants Nos. XDB16010200 and XDB07030300), and the Science Challenge Project, China (Grant No. TZ2016005).

Chen Shi-You^{1, 2}, Teng Hao^{1, 2}, Lu Xin^{1, 2, †}, Shen Zong-Wei^{1, 5}, Qin Shuang^{1, 2}, Wei Wen-Shou³, Chen Rong-Yi³, Chen Li-Ming^{1, 2, 4}, Li Yu-Tong^{1, 2, 4}, Wei Zhi-Yi^{1, 2, ‡}

The strongest electric signals of filament at different propagation distances.