PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-15:43:00
G02     201.4          20.6               11.5 +/-    1.76      25.0 +/-    1.76  0.090 / 0.550
G06     170.1          56.3               10.3 +/-    1.33      12.1 +/-    1.33  0.090 / 0.480
G13     227.4          11.8               10.7 +/-    3.67      28.6 +/-    3.67  0.150 / 0.300
G17     27.9           55.9                7.7 +/-    0.89       9.1 +/-    0.89  0.120 / 0.320
G19     337.7          70.5                9.1 +/-    0.69       9.6 +/-    0.69  0.090 / 0.130
G24     309.8          29.8                7.5 +/-    1.39      13.2 +/-    1.39  0.080 / 0.130
G28     90.9           38.1                8.5 +/-    0.66      12.8 +/-    0.66  0.040 / 0.040
G30     157.9          14.2               10.9 +/-    2.24      27.5 +/-    2.24  0.030 / 0.040