this is what it looks like:
simply add a default time…
time,valid_time,Total precipitation (m),latitude,longitude
0,2023-01-01,0.0,49.55,12.09
0,2023-01-02,9.2427246e-05,49.55,12.09
0,2023-01-03,2.9646326e-05,49.55,12.09
0,2023-01-04,0.0029666382,49.55,12.09
0,2023-01-05,0.0050134,49.55,12.09
0,2023-01-06,0.001292052,49.55,12.09
0,2023-01-07,2.5425805e-05,49.55,12.09
0,2023-01-08,0.00036082417,49.55,12.09
0,2023-01-09,0.0048522484,49.55,12.09
0,2023-01-10,0.0008642981,49.55,12.09
0,2023-01-11,0.003414303,49.55,12.09
0,2023-01-12,0.0019129235,49.55,12.09
0,2023-01-13,0.007045476,49.55,12.09
0,2023-01-14,0.0055543687,49.55,12.09
0,2023-01-15,0.0089707505,49.55,12.09
0,2023-01-16,0.0007179715,49.55,12.09
0,2023-01-17,0.0008182246,49.55,12.09
0,2023-01-18,0.0015914675,49.55,12.09
0,2023-01-19,0.00043158792,49.55,12.09
0,2023-01-20,0.001513178,49.55,12.09
0,2023-01-21,0.0019031027,49.55,12.09
0,2023-01-22,0.0018705851,49.55,12.09
0,2023-01-23,5.899649e-05,49.55,12.09
0,2023-01-24,0.00011829473,49.55,12.09
0,2023-01-25,8.575758e-05,49.55,12.09
0,2023-01-26,0.000160719,49.55,12.09
0,2023-01-27,0.00101351,49.55,12.09