PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-16:27:50
G02     203.3          29.4               14.1 +/-    1.95      25.0 +/-    1.95  0.100 / 0.270
G06     162.9          66.5               13.3 +/-    0.67      14.3 +/-    0.67  0.170 / 0.330
G12     306.7          14.0                7.9 +/-    2.23      20.2 +/-    2.23  0.050 / 0.110
G17     36.6           48.8               10.4 +/-    0.54      13.3 +/-    0.54  0.050 / 0.090
G19     1.7            65.7               11.0 +/-    0.36      11.9 +/-    0.36  0.030 / 0.040
G24     302.3          35.7                9.4 +/-    1.24      14.8 +/-    1.24  0.040 / 0.050
G28     100.6          32.4               10.7 +/-    1.21      17.8 +/-    1.21  0.040 / 0.040