PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-17:42:30
G02     202.3          21.6               18.2 +/-    1.44      38.5 +/-    1.44  0.190 / 0.470
G06     167.7          59.5               17.2 +/-    1.16      19.7 +/-    1.16  0.160 / 0.580
G13     225.4          10.2               18.0 +/-    3.88      50.0 +/-    3.88  0.070 / 0.250
G17     30.3           54.0               12.1 +/-    0.95      14.6 +/-    0.95  0.090 / 0.250
G19     345.3          69.4               14.3 +/-    0.77      15.2 +/-    0.77  0.060 / 0.110
G24     308.1          31.5               12.0 +/-    1.61      20.5 +/-    1.61  0.060 / 0.090
G28     93.6           36.8               13.7 +/-    1.21      21.1 +/-    1.21  0.050 / 0.040
G30     158.2          12.3               14.2 +/-    5.06      37.6 +/-    5.06  0.030 / 0.050