Hello Yuannike,

first of all, I would separate the data by observation type and would create a single file per type, see below. To import such data, select Import in the main menu, go to Terrestrial observations, and select the desired observation type. Repeat this step for all observation types.

Please note, the default angle unit is gradian and the default length unit is metre. Moreover, I skipped the third column because this column was twice.

direction.txt - unit is gradian, if not, you have to change the unit

LT1  124  0.70578644
LT1  123  6.02215435
LT1  125  1.25549495
LT1  126 -2.96778192
LT1   H9 -0.47090233
LT1  127  0.61793298
LT1  Z34  3.92691601
LT1  128  0.65146467
LT1 3Q51 -0.56077990
LT1 3Q52 -0.57956758

zenithangle.txt - unit is gradian, if not, you have to change the unit

LT1  124 22.54334739
LT1  123 26.53877534
LT1  125 29.80086495
LT1  126 35.79317967
LT1   H9 42.41667466
LT1  127 42.50182405
LT1  Z34 42.42228827
LT1  128 49.37524478
LT1 3Q51 31.06585972
LT1 3Q52 29.99171652

and slopedistance.txt - unit is metre, if not, you have to change the unit

LT1  124 31.89958851
LT1  123 31.13565536
LT1  125 30.55087303
LT1  126 29.88254375
LT1   H9 29.50549692
LT1  127 29.50964854
LT1  Z34 29.55193857
LT1  128 29.57211390
LT1 3Q51 26.66349403
LT1 3Q52 26.79246221

Kind regards
Micha