PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-13:42:30
G02     201.4          25.0                6.7 +/-    2.25      13.0 +/-    2.25  0.070 / 0.180
G06     169.9          58.9                5.6 +/-    0.56       6.4 +/-    0.56  0.080 / 0.130
G17     30.6           53.7                3.7 +/-    0.94       4.4 +/-    0.94  0.220 / 0.480
G19     346.1          69.1                4.2 +/-    0.45       4.5 +/-    0.45  0.310 / 0.390
G24     307.6          31.9                4.0 +/-    1.23       6.7 +/-    1.23  0.030 / 0.030
G28     94.3           36.2                5.5 +/-    1.27       8.5 +/-    1.27  0.040 / 0.040
G30     157.9          10.8                7.3 +/-    1.69      20.0 +/-    1.69  0.040 / 0.030