pi+ -> e+ nu gamma Data summary tape variables: one event: line 1: i, run number j, trigger number, 11=PiBeta LowHigh trak->trk_tcsi[l1], positron TDC, CsI trak->trk_tcsi[l2], gamma TDC, CsI trak->trk_epv[l1], positron energy, plastic veto trak->trk_tpv[l1], positron TDC, plastic veto best_posit, positron energy, CsI best_gamma, gamma energy, CsI a12, positron-gamma openning angle lambda, lambda variable line 2: ttim[CHN_B0_TDC], beam counter TDC ttim[CHN_DEGH_TDC], degrader TDC ttim[CHN_TGTH_TDC], target TDC trak->px[l1], positron x-unit-momentum trak->py[l1], positron y-unit-momentum trak->pz[l1], positron z-unit-momentum trak->px[l2], gamma x-unit-momentum trak->py[l2], gamma y-unit-momentum trak->pz[l2], gamma z-unit-momentum trak->z0[l1], positron z-backtracked coordinate line 3: asum->csi_max, index of CsI with maximum energy, 0-239 beam->rf_tdc, beam rf TDC tpig[CHN_PIGATE_TDC], PiGate TDC tpig[CHN_B0_TDC], beam counter TDC with respect to PiGate tpig[CHN_DEGH_TDC], degrader counter TDC with respect to PiGate tpig[CHN_TGTH_TDC], target counter TDC with respect to PiGate asum->csi_sum, total energy in CsI badc[0], beam counter energy badc[1], degrader energy adc_tg, target energy badc[4], target outer ring energy ttim[404], target outer ring TDC twid[404], target outer ring TDC width line 4: mwpc->wc1_n_hits, number of hits in MWPC1 mwpc->wc2_n_hits, number of hits in MWPC2 pvet->pv_n_hit, number of hits in plastic veto asum->csi_outer_sum, energy in CsI veto ring trak->p_tht[l1], polar angle of positron in CsI trak->p_phi[l1], azimuthal angle of positron in CsI twid[CHN_PIGATE_TDC], TDC width of PiGate trak->trk_epv[l2], plastic veto energy behind the gamma track trak->trk_tpv[l2], plastic veto TDC behind the gamma track k event number