The same procedure for the H2 ITMY L1 Open Light voltages were recorded for the H2 ITMY L2 Open Light voltages. A 30-second average of the H2:SUS-ITMY_L2_OSEMINF_*_IN1_DQ channels with the tdsavg command-line tool was used to record their values.  Their values were halved, multiplied by (-1), and entered into the H2:SUS-ITMY_L2_OSEMINF_*_OFFSET channels.  The gains for these channels were calculated by normalizing the open light counts to 30,000cts.

Open Light (cts)
UL = 27204.7
LL = 17354.3
UR = 19496.5
LR = 20515.5

Offsets [-(open light)/2] (cts)
UL = -13602
LL = -8677
UR = -9748
LR = -10258

Gains [30000 / (open light)] 
UL = 1.103
LL = 1.729
UR = 1.539
LR = 1.462


Open Light counts after normalization [tdsavg] (should be ~15000)
UL = 14998.4
LL = 14997
UR = 14999.8
LR = 14993.3