液氦的消耗与测样量有关么？

我们这里液氦每周消耗的情况如下, 供大家参考: (Varian 谱仪, 数字来自外接的液氦存量显示器)
添加满液氦 100.06, 98.0, 96.4, 94.8. 93.4, 91.7, 90.4, 88.6, 87.5, 85.7, 84.2, 81.4, 80.7, 78.5, 77.1, 75.5, 73.9, 72.5, 71.1, 69.8, 68.3, 66.0, 64.4, 62.8, 61.6, 59.9, 58.7, 57.2, 55.7, 54.3, 52.9, 51.7, 49.8, 47.9, 46.8, 45.4, 44.1, 42.7, 41.4, 40.1, 38.7, 37.0, 35.4, 33.3, 32.0, 重新添加液氦