Matlab matlab textscan data separator question.(Crying)

pth = './likelihood/';
fn = 'Udo_2015-01_2015-12.txt';
fid = fopen(fn,'r');

C = importdata(fn);
hdr = split(C(6),'\t');
fmt = repmat('%s', [1 length(hdr)]);

D = textscan(fid,fmt, 'headerlines', 6,'Delimiter', '\t');

 Observation name: likelihood
Observation start date: July 19, 2015
Observation address: Sea area near Uido Island
Latitude: 34 degrees north, 32 minutes and 35 seconds
Hardness: 125 degrees, 48 minutes, 10 seconds
Sequence observation time Water temperature (°C), Maximum wave height (m), Air pressure (hPa), Wind direction (16 points) Wind speed (m/s) 
0   2015/12/31 23:00    10.57   -   -   -   -   -   
1   2015/12/31 22:00    10.68   -   -   -   -   -   
2   2015/12/31 21:00    11.13   -   -   -   -   -   
3   2015/12/31 20:00    11.68   -   -   -   -   -   
4   2015/12/31 19:00    11.63   -   -   -   -   -   
5   2015/12/31 18:00    11.76   -   -   -   -   -   
6   2015/12/31 17:00    11.64   -   -   -   -   -   
7   2015/12/31 16:00    10.78   -   -   -   -   -   
8   2015/12/31 15:00    10.61   -   -   -   -   -   
9   2015/12/31 14:00    10.26   -   -   -   -   -   
10  2015/12/31 13:00    10.2    -   -   -   -   -   
11  2015/12/31 12:00    10.14   -   -   -   -   -