Illuminance plots of 0426

(as computed by ies2tab from that IES photometry file)

spacing 5 plot single luminaire plot
In the left half of the left plot, specific illuminance by a continuous row of luminaires spaced 5 heights is shown (right half is for a single luminaire). The right plot is for a single luminaire, unrotated.

illuminance scale

Values below the scale are illuminance / 1 lx. This is for (unrealistic) “unit” case that luminaires would have lamps producing 1 klm only, would be point-like and just 1 m over the terrain.

ies2tab text output:

   
       
# REPORT: CI9623  
# DESCRIPTION: 827 FL 2X18
# LAMP: FL18/4/3B           
# TILT=NONE
# Bulbs: 2,   1350 lm each
#  (luminous intensites divided by  2.70 in the original ies file)
# Number of measured angles:  37 vertical,  24 horizontal ones
# Photometric type: 1,  Units type: 2
# Luminous openig width, length and height:   0.269   0.571   0.000
# Ballast factor: 1,  Input power:   36 W


# Source file: ies/0426.ies
# Luminaire flux =   371 raw, for the given bulb(s) it would be  1001 lm,
#                   37.1 % of the bulb flux
# between 75 and 90:  4.2 % of the luminaire flux
#  - this part causes just GLARE in case of road lighting and similar purposes
# 80deg and above:  max  14.0 cd / 1000 lm ,  1.5 % of the luminaire flux
# 90deg and above:  max   0.0 cd / 1000 lm ,  0.0 % of the luminaire flux
# CutOff Type: Full_CutOff    

# 62.5 deg to <67.5 deg:   max    47 cd / 1000 lm,
# 67.5 deg to < 76  deg:   max    36 cd / 1000 lm,
# maximum spec. lum. intensity   130 cd / 1000 lm

# The following table gives luminous intensities which would be produced
# using a hypothetic bulb giving a luminous flux of 1000 lm (i.e., cd/klm):

#  H:   0.0  15.0  30.0  45.0  60.0  75.0  90.0 105.0 120.0 135.0 150.0 165.0 180.0 195.0 210.0 225.0 240.0 255.0 270.0 285.0 300.0 315.0 330.0 345.0
#V:  
  0.0   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130   130
  5.0   130   130   130   129   130   130   130   130   130   129   130   130   130   130   130   129   130   130   130   130   130   129   130   130
 10.0   128   128   128   127   128   128   128   128   128   127   128   128   128   128   128   127   128   128   128   128   128   127   128   128
 15.0   125   125   125   125   125   125   125   125   125   125   125   125   125   125   125   125   125   125   125   125   125   125   125   125
 20.0   121   121   121   121   121   121   122   121   121   121   121   121   121   121   121   121   121   121   122   121   121   121   121   121
 25.0   116   116   116   116   116   116   116   116   116   116   116   116   116   116   116   116   116   116   116   116   116   116   116   116
 30.0   110   109   110   109   110   110   111   110   110   109   110   109   110   109   110   109   110   110   111   110   110   109   110   109
 35.0   103   103   103   103   104   103   104   103   104   103   103   103   103   103   103   103   104   103   104   103   104   103   103   103
 40.0  96.0  95.0  96.0  95.0  96.0  96.0  97.0  96.0  96.0  95.0  96.0  95.0  96.0  95.0  96.0  95.0  96.0  96.0  97.0  96.0  96.0  95.0  96.0  95.0
 45.0  87.0  87.0  87.0  87.0  88.0  87.0  89.0  87.0  88.0  87.0  87.0  87.0  87.0  87.0  87.0  87.0  88.0  87.0  89.0  87.0  88.0  87.0  87.0  87.0
 50.0  78.0  78.0  78.0  78.0  79.0  78.0  80.0  78.0  79.0  78.0  78.0  78.0  78.0  78.0  78.0  78.0  79.0  78.0  80.0  78.0  79.0  78.0  78.0  78.0
 55.0  68.0  68.0  68.0  68.0  69.0  68.0  70.0  68.0  69.0  68.0  68.0  68.0  68.0  68.0  68.0  68.0  69.0  68.0  70.0  68.0  69.0  68.0  68.0  68.0
 60.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0  58.0
 65.0  46.0  46.0  47.0  47.0  47.0  47.0  47.0  47.0  47.0  47.0  47.0  46.0  46.0  46.0  47.0  47.0  47.0  47.0  47.0  47.0  47.0  47.0  47.0  46.0
 70.0  35.0  35.0  35.0  35.0  36.0  35.0  36.0  35.0  36.0  35.0  35.0  35.0  35.0  35.0  35.0  35.0  36.0  35.0  36.0  35.0  36.0  35.0  35.0  35.0
 75.0  24.0  23.0  24.0  23.0  25.0  24.0  26.0  24.0  25.0  23.0  24.0  23.0  24.0  23.0  24.0  23.0  25.0  24.0  26.0  24.0  25.0  23.0  24.0  23.0
 80.0  12.0  11.0  13.0  12.0  14.0  13.0  14.0  13.0  14.0  12.0  13.0  11.0  12.0  11.0  13.0  12.0  14.0  13.0  14.0  13.0  14.0  12.0  13.0  11.0
 85.0   4.0   3.0   4.0   4.0   5.0   4.0   5.0   4.0   5.0   4.0   4.0   3.0   4.0   3.0   4.0   4.0   5.0   4.0   5.0   4.0   5.0   4.0   4.0   3.0
 90.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
 95.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
100.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
105.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
110.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
115.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
120.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
125.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
130.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
135.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
140.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
145.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
150.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
155.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
160.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
165.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
170.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
175.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0
180.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0