PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-13:12:40
G02     201.2          24.7               10.7 +/-    2.12      21.1 +/-    2.12  0.250 / 0.270
G06     170.7          58.0                8.9 +/-    0.80      10.3 +/-    0.80  0.250 / 0.360
G17     30.0           54.2                6.1 +/-    1.17       7.3 +/-    1.17  0.080 / 0.110
G19     344.2          69.4                7.2 +/-    0.63       7.7 +/-    0.63  0.120 / 0.100
G24     308.0          31.5                5.6 +/-    2.02       9.4 +/-    2.02  0.060 / 0.040
G28     93.7           36.5                6.2 +/-    1.64       9.6 +/-    1.64  0.050 / 0.040
G30     157.8          11.2                8.0 +/-    1.50      21.7 +/-    1.50  0.220 / 0.200