Measurements sometimes seem to be failed.

IFO configurations during measurements were as follows.
- IMC output power: 2.4W
- Alignment mode: ON

Is there anything else we should take care of?

### Xarm_data_1847.txt
#0 Finesse = 1461.861525, error = 0.000000
#1 Finesse = 1456.184413, error = 5.677112
#2 Finesse = 1442.327431, error = 20.137485
#3 Finesse = 1444.028875, error = 17.686816
#4 Finesse = 4873.629495, error = 6859.219484
#5 Finesse = 486839.519066, error = 1077726.681936
#6 Finesse = 417499.350582, error = 1012134.045491
#7 Finesse = 365494.341780, error = 956710.539751
#8 Finesse = 325044.208661, error = 909222.366785
#9 Finesse = 298090.429247, error = 866345.968455

### Yarm_data_1919.txt
#0 Finesse = 1294.209336, error = 0.000000
#1 Finesse = 1293.573310, error = 0.636026
#2 Finesse = 1305.145376, error = 16.373610
#3 Finesse = 1308.262709, error = 15.173155
#4 Finesse = 88704.700758, error = 174792.876625
#5 Finesse = 74141.010560, error = 162852.581987
#6 Finesse = 63737.085047, error = 152910.772644
#7 Finesse = 55937.179668, error = 144515.954169
#8 Finesse = 49865.512088, error = 137328.955704
#9 Finesse = 45009.710079, error = 131093.581787