,/2$&|&F%|Page #* H        d \'Table 5-2. PG&E Instrument Calibration History and Estimated Measurement Uncertainty             ^Channel #^Measurement^Beginning^Instrument ^Pre- ^Post-^Comments^Estimated           ^Time Stamp ^Calibration^Calibration  ^Msmt                ^Uncertainty(%)                           ^Direct normal lA^Eppley NIP 25508E6 t x^0.3% change ^ 2.8          ^(thermopile) R;A^Eppley NIP 25510E6 w ^-- ^-- ^ 3.6                             ^Global normal  lA ^Eppley PSP 23202F3  t  x ^1.7% change  ^ 2.4          R;A ^Eppley PSP 23996F3  w  ^--  ^--  ^ 4.7                     ^Global horiz.  lA ^Eppley PSP 23995F3  6s  x ^3.2% change  ^ 2.8        ^(thermopile)  R;A ^Eppley PSP 25390F3  w  ^--  ^--  ^ 4.7                       ^Global tilt lA^Eppley PSP 25387F3 ss x^0.2% change ^ 3.8            R;A^Eppley PSP 23201F3 w ^-- ^-- ^ 4.7                           ^Direct norm.* lA^Matrix NIP 3818 wu x^2.7% change ^ 2.2          ^(silicon)                                 ^Temperature lA^Omega T-couple ^-- ^-- ^-- ^--                           ^Pressure lA^Yellow Springs                ^2014-22/31                ^-HA-1-HW 15593 `r ^-- ^-- ^--                           ^Rel. hum. lA^Hygro. 14276 s ^-- ^-- ^--                            ^Wind speed lA^Weathertronics 2301                  =p ^-- ^-- ^--