PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-17:42:50
G01     40.5           15.4                8.4 +/-    1.82      20.7 +/-    1.82  0.300 / 0.270
G06     173.1          42.0               12.8 +/-    0.67      18.0 +/-    0.67  0.340 / 0.440
G13     236.4          21.1               13.4 +/-    4.19      28.8 +/-    4.19  0.080 / 0.110
G15     271.6          11.5               13.1 +/-    2.15      35.4 +/-    2.15  0.120 / 0.110
G17     2.2            69.9               10.9 +/-    0.34      11.6 +/-    0.34  0.110 / 0.290
G19     276.2          67.7               12.5 +/-    0.50      13.4 +/-    0.50  0.100 / 0.300
G24     315.7          21.3                8.7 +/-    2.86      18.5 +/-    2.86  0.020 / 0.030
G28     73.4           46.2               10.2 +/-    1.01      13.6 +/-    1.01  0.030 / 0.030
G30     155.2          26.6               11.9 +/-    1.51      22.5 +/-    1.51  0.030 / 0.040