read file in shell

$ cat tmp.data
s 1 3 0 1095738.816916 120
s 1 3 1 1095777.816447 120
s 1 3 2 1095839.816783 120
s 1 3 3 1095849.817093 120
s 1 3 4 1095889.817398 120
s 1 3 5 1095890.817669 120
s 1 3 6 1095894.817986 120
s 1 3 7 1095993.818285 120
s 1 3 8 1096094.818604 120
s 1 3 9 1096112.818891 120
s 1 3 10 1096138.819238 121
s 1 3 11 1096177.819493 121
s 1 3 12 1096185.819823 121
s 1 3 13 1096249.820129 121
s 1 3 14 1096296.820428 121
s 1 3 15 1096302.820737 121
r 1 3 0 1095793.176704 120
r 1 3 1 1095924.886250 120
r 1 3 2 1096002.680910 120
r 1 3 3 1096038.632938 120
r 1 3 4 1096074.528630 120
r 1 3 5 1096188.276739 120
r 1 3 6 1096248.133086 120
r 1 3 7 1096272.128736 120
r 1 3 8 1096319.986210 120

$ cat ./tmp.data | while read a b c d e f; do echo $a $b $c $d ; done
1 3 0
1 3 1
1 3 2
1 3 3
1 3 4
1 3 5
1 3 6
1 3 7
1 3 8
1 3 9
1 3 10
1 3 11
1 3 12
1 3 13
1 3 14
1 3 15
1 3 0
1 3 1
1 3 2
1 3 3
1 3 4
1 3 5
1 3 6
1 3 7
1 3 8