PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-15:13:00
G01     45.3           21.1                5.6 +/-    5.64      11.9 +/-    5.64  0.200 / 0.330
G06     176.6          31.7               10.1 +/-   11.44      17.1 +/-   11.44  0.220 / 0.330
G13     246.2          26.6               11.0 +/-    6.14      20.7 +/-    6.14  0.080 / 0.250
G15     280.1          14.3                8.0 +/-    8.41      20.2 +/-    8.41  0.090 / 0.210
G17     353.0          74.4               10.6 +/-    9.30      11.0 +/-    9.30  0.050 / 0.080
G19     262.2          67.0                1.0 +/-   26.49       1.0 +/-   26.49  0.060 / 0.080
G24     318.9          11.9                3.0 +/-   16.63       8.1 +/-   16.63  0.030 / 0.030
G28     62.3           50.0                7.7 +/-    3.68       9.8 +/-    3.68  0.030 / 0.030
G30     152.6          36.7                9.9 +/-    8.16      15.2 +/-    8.16  0.060 / 0.150