obs_number time_until_next 1 52.3 2 48.7 3 107.09 4 56 5 48.82 6 50.35 7 52.68 8 53.44 9 55.31 10 103.02 11 54.61 12 50.07 13 50.28 14 54.05 15 56.45 16 50.74 17 98.63 18 53.58 19 52.8 20 56.05 21 55.28 22 55.45 23 51.62 24 106.2 25 53.75 26 66.63 27 63.53 28 57.31 29 50.65 30 52.79 31 74.32 32 58.49 33 56.11 34 47.45 35 53.73 36 49.07 37 57.73 38 103.39 39 59.33 40 45.69 41 56.64 42 51.23 43 64.12 44 51.58 45 100.29 46 49.05 47 53.38 48 54.87 49 51.47 50 51.13 51 50.91 52 107.83